系统；windows95  浏览器是IE5.0
以下是扫描到的日记：
Logfile of HijackThis v1.99.1
Scan saved at 12:00:18, on 05-7-12
Platform: Windows 98 SE (Win9x 4.10.2222A)
MSIE: Internet Explorer v5.00 (5.00.2614.3500)

Running processes:
C:\WINDOWS\SYSTEM\KERNEL32.DLL
C:\WINDOWS\SYSTEM\MSGSRV32.EXE
C:\WINDOWS\SYSTEM\MPREXE.EXE
C:\WINDOWS\SYSTEM\mmtask.tsk
C:\PROGRAM FILES\RISING\RAV\CCENTER.EXE
C:\PROGRAM FILES\RISING\RAV\RAVMOND.EXE
C:\PROGRAM FILES\RISING\RAV\RAVMON.EXE
C:\WINDOWS\RUNDLL32.EXE
C:\WINDOWS\TASKMON.EXE
C:\WINDOWS\SYSTEM\SYSTRAY.EXE
C:\WINDOWS\SYSTEM\HKCMD.EXE
C:\PROGRAM FILES\COMMON FILES\REAL\UPDATE_OB\REALSCHED.EXE
C:\WINDOWS\SYSTEM\INTERNAT.EXE
C:\PROGRAM FILES\YDT\YDTMAIN.EXE
C:\WINDOWS\SYSTEM\DDHELP.EXE
C:\WINDOWS\SYSTEM\WMIEXE.EXE
D:\下载\THUNDER\THUNDER.EXE
D:\下载\THUNDER\TDUPDATE.EXE
C:\WINDOWS\SYSTEM\RNAAPP.EXE
C:\WINDOWS\SYSTEM\TAPISRV.EXE
C:\WINDOWS\SYSTEM\PSTORES.EXE
C:\PROGRAM FILES\INTERNET EXPLORER\IEXPLORE.EXE
C:\WINDOWS\EXPLORER.EXE
C:\WINDOWS\SYSTEM\SPOOL32.EXE
C:\WINDOWS\SYSTEM\WINOA386.MOD
C:\WINDOWS\DESKTOP\HIJACKTHIS.EXE

O1 - Hosts: 70.85.135.246 1106.net
O1 - Hosts: 70.85.135.246 www.1106.net
O1 - Hosts: 70.85.135.246 zs998.com
O1 - Hosts: 70.85.135.246 www.zs998.com
O1 - Hosts: 70.85.135.246 88263.com
O1 - Hosts: 70.85.135.246 www.88263.com
O1 - Hosts: 70.85.135.246 bj68.com
O1 - Hosts: 70.85.135.246 www.bj68.com
O1 - Hosts: 70.85.135.246 lhc315.com
O1 - Hosts: 70.85.135.246 www.lhc315.com
O1 - Hosts: 70.85.135.246 3626.net
O1 - Hosts: 70.85.135.246 www.3626.net
O1 - Hosts: 70.85.135.246 8678.org
O1 - Hosts: 70.85.135.246 www.8678.org70.85.135.246 yy7.net
O1 - Hosts: 70.85.135.246 www.yy7.net
O1 - Hosts: 70.85.135.246 ok555.net
O1 - Hosts: 70.85.135.246 www.ok555.net
O1 - Hosts: 70.85.135.246 55776.com
O1 - Hosts: 70.85.135.246 www.55776.com
O1 - Hosts: 70.85.135.246 hk6869.com
O1 - Hosts: 70.85.135.246 www.hk6869.com
O1 - Hosts: 70.85.135.246 xg98.net
O1 - Hosts: 70.85.135.246 www.xg98.net
O1 - Hosts: 70.85.135.246 6hw.com
O1 - Hosts: 70.85.135.246 www.6hw.com
O1 - Hosts: 70.85.135.246 kk6688.com
O1 - Hosts: 70.85.135.246 www.kk6688.com
O1 - Hosts: 70.85.135.246 3721vv.com
O1 - Hosts: 70.85.135.246 www.3721vv.com
O1 - Hosts: 70.85.135.246 kk65.com
O1 - Hosts: 70.85.135.246 www.kk65.com
O1 - Hosts: 70.85.135.246 44422.com
O1 - Hosts: 70.85.135.246 www.44422.com
O1 - Hosts: 70.85.135.246 3721aa.net
O1 - Hosts: 70.85.135.246 www.3721aa.net
O1 - Hosts: 70.85.135.246 3721aa.com
O1 - Hosts: 70.85.135.246 www.3721aa.com
O1 - Hosts: 70.85.135.246 15816.net
O1 - Hosts: 70.85.135.246 www.15816.net
O1 - Hosts: 70.85.135.246 kk79.com
O1 - Hosts: 70.85.135.246 www.kk79.com
O1 - Hosts: 70.85.135.246 226229.com
O1 - Hosts: 70.85.135.246 www.226229.com
O1 - Hosts: 70.85.135.246 33778.com
O1 - Hosts: 70.85.135.246 www.33778.com
O1 - Hosts: 70.85.135.246 776677.com
O1 - Hosts: 70.85.135.246 www.776677.com
O1 - Hosts: 70.85.135.246 k3218.com
O1 - Hosts: 70.85.135.246 www.k3218.com
O1 - Hosts: 70.85.135.246 kkkyyy.com
O1 - Hosts: 70.85.135.246 www.kkkyyy.com
O1 - Hosts: 70.85.135.246 345ok.com
O1 - Hosts: 70.85.135.246 www.345ok.com
O1 - Hosts: 70.85.135.246 vv8888.com
O1 - Hosts: 70.85.135.246 www.vv8888.com
O1 - Hosts: 70.85.135.246 my2850.com
O1 - Hosts: 70.85.135.246 www.my2850.com
O1 - Hosts: 70.85.135.246 mk2850.com
O1 - Hosts: 70.85.135.246 www.mk2850.com
O1 - Hosts: 70.85.135.246 mark01234.com
O1 - Hosts: 70.85.135.246 www.mark01234.com
O1 - Hosts: 70.85.135.246 mark01238.com
O1 - Hosts: 70.85.135.246 www.mark01238.com
O1 - Hosts: 70.85.135.246 060888.com
O1 - Hosts: 70.85.135.246 www.060888.com
O1 - Hosts: 70.85.135.246 23566.com
O1 - Hosts: 70.85.135.246 www.23566.com
O1 - Hosts: 70.85.135.246 68008.com
O1 - Hosts: 70.85.135.246 www.68008.com
O1 - Hosts: 70.85.135.246 kk88568.com
接下：

O1 - Hosts: 70.85.135.246 www.kk88568.com
O1 - Hosts: 70.85.135.246 hk90333.com
O1 - Hosts: 70.85.135.246 www.hk90333.com
O1 - Hosts: 70.85.135.246 th9999.com
O1 - Hosts: 70.85.135.246 www.th9999.com
O1 - Hosts: 70.85.135.246 kk8858.com
O1 - Hosts: 70.85.135.246 www.kk8858.com
O1 - Hosts: 70.85.135.246 hk678.com
O1 - Hosts: 70.85.135.246 www.hk678.com
O1 - Hosts: 70.85.135.246 six678.com
O1 - Hosts: 70.85.135.246 www.six678.com
O1 - Hosts: 70.85.135.246 k7777.net
O1 - Hosts: 70.85.135.246 www.k7777.net
O1 - Hosts: 70.85.135.246 k7777.com
O1 - Hosts: 70.85.135.246 www.k7777.com
O1 - Hosts: 70.85.135.246 lhc9.com
O1 - Hosts: 70.85.135.246 www.lhc9.com
O1 - Hosts: 70.85.135.246 jg94.com
O1 - Hosts: 70.85.135.246 www.jg94.com
O1 - Hosts: 70.85.135.246 zdr8.com
O1 - Hosts: 70.85.135.246 www.zdr8.com
O1 - Hosts: 70.85.135.246 my118.com
O1 - Hosts: 70.85.135.246 www.my118.com
O1 - Hosts: 70.85.135.246 6667888.com
O1 - Hosts: 70.85.135.246 www.6667888.com
O1 - Hosts: 70.85.135.246 v8899.com
O1 - Hosts: 70.85.135.246 www.v8899.com
O1 - Hosts: 70.85.135.246 1888six.com
O1 - Hosts: 70.85.135.246 www.1888six.com
O1 - Hosts: 70.85.135.246 55185.com
O1 - Hosts: 70.85.135.246 www.55185.com
O2 - BHO: DDDMon Class - {6BDE1669-B490-48E3-B668-456314F2D6C3} - C:\PROGRAM FILES\DUDU\DDDCLIENT\DDDIEMON.DLL
O2 - BHO: IDDTInitObj Class - {15DDE989-CD45-4561-BF99-D22C0D5C2B74} - C:\PROGRA~1\SINA\DLFAST\DDTINIT.DLL
O2 - BHO: MDEobject Class - {4136C3F6-7636-49bf-A122-D4DA53B1ADDF} - (no file)
O2 - BHO: AssistII - {BB936323-19FA-4521-BA29-ECA6A121BC78} - C:\PROGRAM FILES\3721\ASSIST\ASBAR.DLL
O2 - BHO: AntiFish Class - {38928D50-8A48-44C2-945F-D2F23F771410} - C:\PROGRAM FILES\3721\ASSIST\ANGLING.DLL
O2 - BHO: 搜索助手 - {04844102-FC0B-4f44-9E93-0C4293BB5E80} - C:\PROGRAM FILES\YDT\YDT.DLL
O2 - BHO: ThunderIEHelper Class - {0005A87D-D626-4B3A-84F9-1D9571695F55} - C:\WINDOWS\SYSTEM\XUNLEIBHO_V2.DLL
O2 - BHO: (no name) - {D861B722-80FE-46B7-9A60-20E8560AB8F8} - (no file)
O2 - BHO: apronA Class - {557B9038-FC87-453C-8B08-32D85F46EAC4} - C:\WINDOWS\REALPL~4.DLL
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar1.dll
O3 - Toolbar: 电台(&R) - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\SYSTEM\MSDXM.OCX
O3 - Toolbar: 完美网译通 - {F43BD772-ABDD-43b7-A96A-3E9E61946EC0} - C:\WINDOWS\WORLD2\TOOLBAR\HMTOOLBAR.DLL
O3 - Toolbar: (no name) - {B580CF65-E151-49C3-B73F-70B13FCA8E86} - (no file)
O3 - Toolbar: 金山快译(&K) - {6C3797D2-3FEF-4cd4-B654-D3AE55B4128C} - C:\PROGRA~1\KINGSOFT\FASTAIT\IEBAND.DLL
O3 - Toolbar: 上网助手 - {BB936323-19FA-4521-BA29-ECA6A121BC78} - C:\PROGRAM FILES\3721\ASSIST\ASBAR.DLL
O3 - Toolbar: 新浪点点通 - {F60C7D81-8471-4D40-AAFE-56D318F34C2D} - C:\PROGRA~1\SINA\DLFAST\DDTONG~1.DLL
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar1.dll
O4 - HKLM\..\Run: [ScanRegistry] C:\WINDOWS\scanregw.exe /autorun
O4 - HKLM\..\Run: [TaskMonitor] C:\WINDOWS\taskmon.exe
O4 - HKLM\..\Run: [SystemTray] SysTray.Exe
O4 - HKLM\..\Run: [LoadPowerProfile] Rundll32.exe powrprof.dll,LoadCurrentPwrScheme
O4 - HKLM\..\Run: [IgfxTray] C:\WINDOWS\SYSTEM\igfxtray.exe
O4 - HKLM\..\Run: [HotKeysCmds] C:\WINDOWS\SYSTEM\hkcmd.exe
O4 - HKLM\..\Run: [StormCodec_Helper] "C:\Program Files\Ringz Studio\Storm Codec\StormSet.exe" /S /opti
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [MoveSearch] C:\PROGRAM FILES\WSEARCH\SEARCH.EXE
O4 - HKLM\..\Run: [internat] internat.exe
O4 - HKLM\..\Run: [internat.exe] internat.exe
O4 - HKLM\..\Run: [YDTMain.exe] C:\PROGRA~1\YDT\YDTMain.exe
O4 - HKLM\..\Run: [Windows内存整理] C:\PROGRAM FILES\WOM\WINMEM.EXE
O4 - HKLM\..\Run: [] regedit -s C:\$NtUninstallQ5926809$\spcustom.dll
O4 - HKLM\..\Run: [cncrack] http://686858.com
O4 - HKLM\..\Run: [RavMon] C:\PROGRA~1\RISING\RAV\RAVMON.EXE -SYSTEM
O4 - HKLM\..\RunServices: [RsCcenter] C:\PROGRA~1\RISING\RAV\CCENTER.EXE
O4 - HKLM\..\RunServices: [RavMond] C:\PROGRA~1\RISING\RAV\RAVMOND.EXE
O4 - HKLM\..\RunServices: [RavMon] C:\PROGRA~1\RISING\RAV\RAVMON.EXE -SYSTEM
O4 - Startup: 迅雷4.lnk = ?
O8 - Extra context menu item: &使用迅雷下载 - D:\下载\Thunder\geturl.htm
O8 - Extra context menu item: &使用迅雷下载全部链接 - D:\下载\Thunder\getAllurl.htm
O8 - Extra context menu item: 用比特精灵下载(&B) - C:\PROGRAM FILES\BITSPIRIT\bsurl.htm
O8 - Extra context menu item: &使用DuDu 加速器下载 - res://C:\PROGRAM FILES\DUDU\DDDCLIENT\dddmext.dll/202
O8 - Extra context menu item: 百度-搜索网页 - res://C:\PROGRAM FILES\BAIDU\BAR\BAIDUBAR.DLL/BAIDUSEARCH.HTM
O8 - Extra context menu item: 百度-搜索新闻 - res://C:\PROGRAM FILES\BAIDU\BAR\BAIDUBAR.DLL/BAIDUNEWS.HTM
O8 - Extra context menu item: 百度-搜索图片 - res://C:\PROGRAM FILES\BAIDU\BAR\BAIDUBAR.DLL/BAIDUIMG.HTM
O8 - Extra context menu item: 百度-搜索MP3 - res://C:\PROGRAM FILES\BAIDU\BAR\BAIDUBAR.DLL/BAIDUMP3.HTM
O8 - Extra context menu item: 百度-搜索歌词 - res://C:\PROGRAM FILES\BAIDU\BAR\BAIDUBAR.DLL/BAIDULYRIC.HTM
O8 - Extra context menu item: 百度-搜索贴吧 - res://C:\PROGRAM FILES\BAIDU\BAR\BAIDUBAR.DLL/BAIDUPOST.HTM
O8 - Extra context menu item: 百度-词典搜索 - res://C:\PROGRAM FILES\BAIDU\BAR\BAIDUBAR.DLL/BAIDU_DIC.HTM
O8 - Extra context menu item: 添加到QQ自定义面板 - C:\PROGRAM FILES\QQ2005\AddPanel.htm
O8 - Extra context menu item: 添加到QQ表情 - C:\PROGRAM FILES\QQ2005\AddEmotion.htm
O8 - Extra context menu item: 用QQ彩信发送该图片 - C:\PROGRAM FILES\QQ2005\SendMMS.htm
O8 - Extra context menu item: 使用新浪下载助手下载 - C:\PROGRA~1\SINA\DLFAST\sinadl.htm
O8 - Extra context menu item: &Google Search - res://C:\PROGRAM FILES\GOOGLE\GOOGLETOOLBAR1.DLL/cmsearch.html
O8 - Extra context menu item: 缓存的网页快照 - res://C:\PROGRAM FILES\GOOGLE\GOOGLETOOLBAR1.DLL/cmcache.html
O8 - Extra context menu item: 类似网页 - res://C:\PROGRAM FILES\GOOGLE\GOOGLETOOLBAR1.DLL/cmsimilar.html
O8 - Extra context menu item: 反向链接 - res://C:\PROGRAM FILES\GOOGLE\GOOGLETOOLBAR1.DLL/cmbacklinks.html
O9 - Extra button: 易趣购物 - {DE60714F-AC17-427e-861A-FD60CBDF119A} - http://click2.ad4all.net/url2/urlmanage/url.asp?id=1 (file missing)
O9 - Extra 'Tools' menuitem: 易趣购物 - {DE60714F-AC17-427e-861A-FD60CBDF119A} - http://click2.ad4all.net/url2/urlmanage/url.asp?id=1 (file missing)
O9 - Extra button: QQ - {c95fe080-8f5d-11d2-a20b-00aa003c157b} - C:\PROGRAM FILES\QQ2005\QQ.EXE
O9 - Extra 'Tools' menuitem: 腾讯QQ - {c95fe080-8f5d-11d2-a20b-00aa003c157b} - C:\PROGRAM FILES\QQ2005\QQ.EXE
O9 - Extra button: 上网助手 - {5D73EE86-05F1-49ed-B850-E423120EC338} - http://assistant.3721.com/index.htm?fb=Cns (file missing)
O9 - Extra button: 寻宝乐趣多 - {59BC54A2-56B3-44a0-93E5-432D58746E26} - http://hot.3721.com/rd/shop_btn.htm (file missing)
O9 - Extra button: Yahoo 1G电邮 - {507F9113-CD77-4866-BA92-0E86DA3D0B97} - http://cn.mail.yahoo.com/promo/rd1 (file missing)
O9 - Extra button: 情景聊天 - {E5D12C4E-7B4F-11D3-B5C9-0050045C3C96} - http://cn.rd.yahoo.com/home/messenger/bjk/clientbtn/?http://cn.messenger.yahoo.com/ (file missing)
O9 - Extra button: 手机短信 - {00000000-0000-0001-0001-596BAEDD1289} - http://sms.3721.com/ie/index.htm (file missing)
O9 - Extra button: (no name) - {FD00D911-7529-4084-9946-A29F1BDF4FE5} - http://assistant.3721.com/clean1.htm?fb=Cns (file missing)
O9 - Extra 'Tools' menuitem: 清理上网记录 - {FD00D911-7529-4084-9946-A29F1BDF4FE5} - http://assistant.3721.com/clean1.htm?fb=Cns (file missing)
O9 - Extra button: (no name) - {ECF2E268-F28C-48d2-9AB7-8F69C11CCB71} - http://assistant.3721.com/security1.htm?fb=Cns (file missing)
O9 - Extra 'Tools' menuitem: 修复浏览器 - {ECF2E268-F28C-48d2-9AB7-8F69C11CCB71} - http://assistant.3721.com/security1.htm?fb=Cns (file missing)
O9 - Extra button: 新浪点点通 - {F60C7D81-8471-4D40-AAFE-56D318F34C2D} - C:\PROGRA~1\SINA\DLFAST\DDTONG~1.DLL
O11 - Options group: [!CNS]  上网助手-地址栏搜索
O14 - IERESET.INF: SEARCH_PAGE_URL=
O14 - IERESET.INF: START_PAGE_URL=
O16 - DPF: {B38870E4-7ECB-40DA-8C6A-595F0A5519FF} (MsnMessengerSetupDownloadControl Class) - http://messenger.msn.com/download/msnmessengersetupdownloader.cab
O16 - DPF: {3D8F74EE-8692-4F8F-B8D2-7522E732519E} (WebActivater Control) - http://game.qq.com/QQGame2.cab
O16 - DPF: {E4E2F180-CB8B-4DE9-ACBB-DA745D3BA153} (Rising Web Scan Object) - http://download.rising.com.cn/register/pcver/autoupgradepad/Ver2005/OL2005.cab
O17 - HKLM\System\CCS\Services\VxD\MSTCP: NameServer = 192.168.0.10,202.101.107.54
O18 - Protocol: koboo - {7DEE9D05-FA0A-4416-A6F3-6537D0EAB6A6} - C:\WINDOWS\SYSTEM\MBPROT.DLL

重新启动到安全模式（进入安全模式的方法:重新启动电脑, 开机自动检测完后, 按[F8]键(可以一直按到启动菜单出来为止), 选择安全模式(Safe Mode)进入Windows。）

请关闭所有IE界面，重新使用HijackThis扫描一次，选中下面建议修复的项目，让HijackThis修复，修复前请允许HijackThis保留备份。（如果楼主知道是安全的可以不必勾选）
所有01项
O2 - BHO: MDEobject Class - {4136C3F6-7636-49bf-A122-D4DA53B1ADDF} - (no file)
O2 - BHO: (no name) - {D861B722-80FE-46B7-9A60-20E8560AB8F8} - (no file)
O2 - BHO: MDEobject Class - {4136C3F6-7636-49bf-A122-D4DA53B1ADDF} - (no file)
O2 - BHO: apronA Class - {557B9038-FC87-453C-8B08-32D85F46EAC4} - C:\WINDOWS\REALPL~4.DLL
O3 - Toolbar: (no name) - {B580CF65-E151-49C3-B73F-70B13FCA8E86} - (no file)
O4 - HKLM\..\Run: [] regedit -s C:\$NtUninstallQ5926809$\spcustom.dll
O4 - HKLM\..\Run: [cncrack] http://686858.com
O9 - Extra button: 易趣购物 - {DE60714F-AC17-427e-861A-FD60CBDF119A} - http://click2.ad4all.net/url2/urlmanage/url.asp?id=1 (file missing)
O9 - Extra 'Tools' menuitem: 易趣购物 - {DE60714F-AC17-427e-861A-FD60CBDF119A} - http://click2.ad4all.net/url2/urlmanage/url.asp?id=1 (file missing)
O14 - IERESET.INF: SEARCH_PAGE_URL=
O14 - IERESET.INF: START_PAGE_URL=

然后打开我的电脑。。再点工具。。打开文件夹选项。。。查看。。。把隐藏受保护的系统文件（推荐）和隐藏已知文件类型的扩展名的勾去掉。再显示所有文件。 用WINDOWS的查找功能进行查找并删除：
C:\WINDOWS\REALPL~4.DLL
C:\$NtUninstallQ5926809$\spcustom.dll


问题仍在请贴一个完整的日志上来