lol too long anyways my PC is clean and instead of bothering all above move your imp files to other drives than format and reinstall windows and after that be carefull of following.

1. No Spyware/Anit Virus needed b'le me I never use them.
2. Dont accept .exe files on messenger/IRC and more.
3. Only accept files from trusted sources.
4. Always read the Certificate while accessing HTTPS pages.
5. Dont open mails from unknown sources.
6. Dont open site that have more than 1 popups.
7. Use Firefox as its most secure browser.
8. Keep Windows FIREWALL on no external firewall needed.
9. Keep your harddisk clean, always delete unnecessary stuff.
10. Try to put as much low media as you can, always store mp3's movies etc on CD-R, CR-RW or backup HardDiskDrive [I use Backup HDD as its 80gb so its easy to store and delete].
11. Never click ok on any popups [while using internet] always click 'X' dont even bother clicking Cancel.
12. Keep cleaning your temporary files.
13. If you see sign of infection than Install MICROSOFT ANTISPYWARE scan and delete spware [always delete dont quarantine or block]. Uninstall AntiSpyware after that else it'll block some of your outgoing TCP which may slowdown net access or applications access.
14. AntiVirus program if you wanna use [I recommend not to] than only use AVG AntiVirus. [http://www.grisoft.com]
15. If you wanna use AntiSpyware only use MS AntiSpyware [http://www.microsoft.com]
16. Using XP is securer than Win 98 and using WinXP Pro is better than WinXP Home.
17. Try to stay away from Beta Versions of any applications as they usually makes wrong Registeries and creates problems.

Thats all I can rem now If I get more points in mah mind will tell ya.
And sorry to say the above **** only explained SpyWare and Virus so sad na.