各位大侠帮帮忙啊，
时不时的弹出这样的对话框

HijackThis的信息如下
Logfile of HijackThis v1.99.1
Scan saved at 20:36:43, on 2005-8-14
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\SOUNDMAN.EXE
D:\Downloads\垃圾\雪狐日历精灵\CalSprite.exe
C:\WINDOWS\system32\nvsvc32.exe
C:\PROGRAM FILES\RISING\RAV\CCENTER.EXE
C:\PROGRAM FILES\RISING\RAV\Ravmond.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\rising\Rav\RavMon.exe
C:\WINDOWS\regedit.exe
C:\Documents and Settings\Yuan\桌面\BT\boboieV2.0\HijackThis.exe

F2 - REG:system.ini: UserInit=userinit.exe
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: TeachingHandler - {31EBA2E2-58B2-4980-9C41-F12F5F1422C5} - C:\WINDOWS\system32\TPHANDLE.dll
O2 - BHO: NaviHelperObj Class - {3E422F49-1566-40D3-B43D-077EF739AC32} - C:\WINDOWS\system32\NaviHelper.dll
O2 - BHO: NTIECatcher Class - {C56CB6B0-0D96-11D6-8C65-B2868B609932} - C:\Program Files\NetTransport 2\NTIEHelper.dll
O3 - Toolbar: 金山快译(&K) - {6C3797D2-3FEF-4cd4-B654-D3AE55B4128C} - C:\Program Files\Kingsoft\FastAIT 2005\IEBand.dll
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [NvMediaCenter] RUNDLL32.EXE C:\WINDOWS\system32\NvMcTray.dll,NvTaskbarInit
O4 - HKLM\..\Run: [CalSprite] D:\Downloads\垃圾\雪狐日历精灵\CalSprite.exe
O8 - Extra context menu item: 使用影音传送带下载 - C:\Program Files\NetTransport 2\NTAddLink.html
O8 - Extra context menu item: 使用影音传送带下载全部链接 - C:\Program Files\NetTransport 2\NTAddList.html
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_04\bin\npjpi150_04.dll
O9 - Extra 'Tools' menuitem: Sun Java 控制台 - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_04\bin\npjpi150_04.dll
O9 - Extra button: 豪杰超级解霸V8 - {367E0A21-8601-4986-9C9A-153BF5ACA118} - C:\Herosoft\HeroV8\STHSDVD.EXE
O9 - Extra 'Tools' menuitem: 豪杰超级解霸V8 - {367E0A21-8601-4986-9C9A-153BF5ACA118} - C:\Herosoft\HeroV8\STHSDVD.EXE
O9 - Extra button: 信息检索 - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O16 - DPF: {2BFAA61B-5C83-4865-8281-D8BDBF863061} (PGEdit Class) - https://www.gnetpg.com/PG_ATL.cab
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://v5.windowsupdate.microsoft.com/v5consumer/V5Controls/en/x86/client/wuweb_site.cab?1116428590437
O16 - DPF: {C7420698-3CCE-4823-8795-1C098F2D3A4B} (WebFtp Class) - http://10000.gd.cn/AT/WebPerformance.dll
O23 - Service: Macromedia Licensing Service - Unknown owner - C:\Program Files\Common Files\Macromedia Shared\Service\Macromedia Licensing.exe
O23 - Service: Machine Debug Manager (MDM) - Unknown owner - C:\Program Files\Common Files\Microsoft Shared\VS7DEBUG\MDM.EXE (file missing)
O23 - Service: Microsoft Search (MSSEARCH) - Unknown owner - C:\Program Files\Common Files\System\MSSearch\Bin\mssearch.exe (file missing)
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe
O23 - Service: Rising Process Communication Center (RsCCenter) - rising - C:\PROGRAM FILES\RISING\RAV\CCENTER.EXE
O23 - Service: RsRavMon Service (RsRavMon) - Beijing Rising Technology Co., Ltd. - C:\PROGRAM FILES\RISING\RAV\Ravmond.exe


请问哪些是可以删除的？？？

【回复“Yuan55555”的帖子】
建议您在安全模式下进行下列操作。
修复：
F2 - REG:system.ini: UserInit=userinit.exe
O2 - BHO: NaviHelperObj Class - {3E422F49-1566-40D3-B43D-077EF739AC32} - C:\WINDOWS\system32\NaviHelper.dll
删除：
C:\WINDOWS\system32\NaviHelper.dll
C:\WINDOWS\system32\host.dat。

重新启动电脑, 开机检测完后, 按[F8]键(可以一直按到启动菜单出来为止), 选择安全模式进入Windows

运行Hijackthis，扫描结束后在下列选项前打上勾，然后选修复“Fix Checked”：

F2 - REG:system.ini: UserInit=userinit.exe
O2 - BHO: TeachingHandler - {31EBA2E2-58B2-4980-9C41-F12F5F1422C5} - C:\WINDOWS\system32\TPHANDLE.dll
O2 - BHO: NaviHelperObj Class - {3E422F49-1566-40D3-B43D-077EF739AC32} - C:\WINDOWS\system32\NaviHelper.dll
O16 - DPF: {2BFAA61B-5C83-4865-8281-D8BDBF863061} (PGEdit Class) - https://www.gnetpg.com/PG_ATL.cab

显示隐藏文件

双击我的电脑--工具---文件夹选项--查看选项卡--单击选取"显示隐藏文件或文件夹"--清除"隐藏受保护的操作系统文件（推荐）"复选框。在提示您确定更改时，单击“是”--单击“确定”。

然后找到如下文件并删除（如果有的话）。
C:\WINDOWS\system32\TPHANDLE.dll
C:\WINDOWS\system32\NaviHelper.dll

关注

原来如此！学习一下。