Mike, for the 2008 version, try MBAM which I mentioned above. It removed the viruses on our XP machines we had to fix for work. After running MBAM, I would run either Spybot-S&D or Ad-Aware (preferably both) and then use CCleaner to clean up the registry. This entire process on our work PCs proved to take less time than rebuilding other PCs with the same infection. Before we found out about MBAM, we were having to reinstall XP and all the apps which took signifantly longer for all the apps we use for work.
Antec Nine Hundred, C2Q Q9300 (Currently at stock speeds), Asus Maximus II Formula, OCZ Reaper HPC DDR2 1066 4GB (2x2GB), BFG 9800GTX+, SupremeFX X-Fi, OCZ GameXStream 700W, Seagate 500 GB SATA hard drive, Seagate 750 GB SATA hard drive, Samsung SH-S203N SATA DVDRW, Lite-On LH-20A1L SATA DVDRW, Zalman 9700 LED, Windows Vista Ultimate 64-bit retail version with SP1