Rule number one when removing spyware/adware/malware from your computer...
Disable System Restore. Many of these programs hide installers in the restore files and reinstall themselves when you reboot.
1. Click Start, right click My Computer and select "Properties."
2. Click on the "System Restore" tab.
3. Click the box marked "Turn off System Restore" and click "Apply" then "OK".
Now run all the spyware and antivirus programs that you have to remove the garbage.
Reboot and run them again to make sure that the system is clean.
Once the computer is clean, you can follow the directions above again and uncheck the box marked "Shut off System Restore."