[Gareth]

Yeah, like it says here... http://www.eweek.com/article2/0,1895,1945782,00.asp

In a rare discussion about the severity of the Windows malware scourge, a Microsoft security official said businesses should consider investing in an automated process to wipe hard drives and reinstall operating systems as a practical way to recover from malware infestation.

"When you are dealing with rootkits and some advanced spyware programs, the only solution is to rebuild from scratch. In some cases, there really is no way to recover without nuking the systems from orbit," Mike Danseglio, program manager in the Security Solutions group at Microsoft, said in a presentation at the InfoSec World conference here.