LiveCDs? (Score 1)

Ok, I see how that's a great technical feat, but how is this any different? If I suspect a machine at work I wipe it. If it's a friend asking for help, and there are tons of settings I can't easily copy, I use a LiveCD and hope for the best. The illusion of real-time scanners and programs like AdAware passed a long time ago. Unless the virus flashes the BIOS (kudoz to the writer), the LiveCD should still be able to track it down, right? Provided the signature is known of course. I don't see how this changes anything?