Anti-Virus Software

AVG Free anti-virus
Avast!

Spy ware Cleaners/Prevention

Malwarebytes
Spybot S&d

Misc.

This program is useful in disabling programs that cannot be stopped by standard methods. Each one works the same they are just named differently to fool the virus.
rKill.scr, rKill.com, rKill.exe (All in One Zip)

HijackThis is a program that allows you to change a lot of settings on your computer as well as see if there are any unwanted programs on your computer:
HijackThis

CCleaner is also a useful program that will clear out all the temporary files on your computer cleaning space on your hard drive.
CCleaner