use faronics deep freeze! it takes care of everything! viruses, worms, Trojans, spy ware, with a simple restart! and does not affect system performance! it sounds like the best solution for u. I'm tried of explaining the magic of it so just go here for more info! It doesn't say this there but if u expect to be saving anything u must partition Ur "docs and settings" folder into a separate partition and when deep freeze askers you what to freeze..dont select the drive letter u gave Ur docs and settings folder!