我建议安装微软的 Microsoft antispyware，有几点好处：
1、与系统的兼容性更好
2、完全免费
3、病毒码自动升级
4、软件自动升级
5、自动将可疑信息发送到反间谍网
更详细的信息如下：
Detect and remove spyware
• Easily detect spyware on your PC. Quickly and easily find spyware that can slow down your computer, display annoying pop-up ads, change Internet settings, or use your private information without your consent.
• In-depth spyware removal returns your PC to normal. Straightforward operation and thorough removal technology make it easy for people of all skill levels to eliminate detected spyware. If you inadvertently remove any programs, you can easily get them back.
• Maintain your PC with regularly scheduled spyware scanning and removal. Regularly scheduled spyware scans help maintain your PC. They can be run when it's convenient for you: on-demand or on any schedule you set.
• Stay in control of what's running on your PC. Quickly discover and remove unwanted programs that may have been installed without your consent. If you inadvertently remove any programs, you can easily get them back.
Improve Internet browsing safety
• Help stop spyware in its tracks with continuous protection. Windows AntiSpyware improves Internet browsing safety by guarding more than 50 ways Web sites and programs can put spyware on your PC.
• Protection that doesn't distract you from using your PC. Windows AntiSpyware works in the background, automatically handling spyware based on your preferences. This enables you to use your PC with minimal interruption.
• Undo unwanted changes to Internet Explorer settings. Easily restore Internet settings that are persistently changed by spyware, including your home page or the default search engine.
Stop the latest threats
• Stop new threats faster with SpyNet™. The voluntary, worldwide SpyNet™ community plays a key role in determining which suspicious programs are classified as spyware. SpyNet™ participants help to discover new threats quickly so everyone is better protected. Any user can choose to join SpyNet™ and report potential spyware to Microsoft.
• Spyware expertise you can rely on. A dedicated team of Microsoft researchers scours the Internet to discover new spyware and develop methods to counteract it.
• Automatically stay up to date. Updates to counteract new spyware are automatically downloaded to your PC, helping to keep you protected from the latest threats.
Microsoft AntiSpyware Features
Security Agents
Application Agents
Application Agent: ActiveX Installation
Application Agent: Application Restrictions
Application Agent: Browser Helper
Object (BHO)
Application Agent: Disable Regedit Policy
Application Agent: Installed Components
Application Agent: Startup Registry Files
Application Agent: Internet Explorer Explorer Bar
Application Agent: Internet Explorer Extensions
Application Agent: Internet Explorer Menu Extensions
Application Agent: Internet Explorer Plugins
Application Agent: Internet Explorer Reset Web Settings
Application Agent: Internet Explorer Restrictions
Application Agent: Internet Explorer Toolbars
Application Agent: Internet Explorer Security Settings
Application Agent: Internet Explorer Security Zones
Application Agent: Internet Explorer ShellBrowser
Application Agent: Internet Explorer Trusted Sites
Application Agent: Internet Explorer URLs
Application Agent: Internet Explorer WebBrowser
Application Agent: Process Execution
Application Agent: Running Process
Application Agent: Script Blocking
Application Agent: Startup Files
Application Agent: URL Search Hooks
Internet Agents
Internet Agent: Application Connections
Internet Agent: Dial-up Connection
Internet Agent: Internet Proxy Server
Internet Agent: Internet Safe Sites
Internet Agent: Layered Service Provider
Internet Agent: Namer Server Protection
Internet Agent: Spam Zombie Prevention
Internet Agent: TCP/IP Parameters
Internet Agent: TCP/IP Parameters
Internet Agent: WiFi Connection
Internet Agent: Windows NetBIOS Messenger Service
System Agents
System Agent: AppInit DLL
System Agent: Approved Shell Extensions
System Agent: Context Menu Handler
System Agent: Control.ini Policy
System Agent: Explorer Trojan
System Agent: Ini File Mapping
System Agent: Shared TaskScheduler
System Agent: Shell Execute Hook
System Agent: Shell Open Commands
System Agent: Shell Service
Object Delay Load
System Agent: User Shell Folders
System Agent: Windows Directory Trojans
System Agent: Windows Extensions
System Agent: Windows Password Protection
System Agent: Windows Protocols
System Agent: Windows Update Service
System Agent: Windows Host File
System Agent: Windows Logon Policies
System Agent: Windows System.ini File
System Agent: Windows Restrict Anonymous
System Agent: Windows Win.ini File
System Agent: Winlogon Userinit
System Agent: Winlogon Shell
System Agent: WOW Boot Shell
Advanced Tools
System Explorers
System Explorers
Explorer: Browser Helper
Objects
Explorer: Downloaded ActiveX Programs
Explorer: Internet Connected Applications
Explorer: Internet Explorer Settings
Explorer: Running Processes
Explorer: Startup Applications
Explorer: Windows Host File
Explorer: Windows Shell Execute Hooks
Explorer: Winsock Layered Service Providers
http://www.microsoft.com/china/athome/security/videos/Spyware6-hi.htm
