before you reenable System Restore, and after the Virii Scan, scan with Ad-Aware, SpyBot S&D, and HiJackThis! (in that order)...
In HiJackThis! you can create a Log file (Config) and paste it here, so that we can tear it apart and help you further...
Ben
If it works don't fix it! If it doesn't use a sledgehammer...