A friend of mine has asked me to work on his PC for him. He got a virus, which apparently really messed things up a lot. He basically just wants to have it wiped clean and start over again. I'll be reinstalling Windows XP.
My concern is I don't want any virus from his PC getting onto any of my PC's on my home network. What I thought I would do is try to wipe the hard drive clean first, and then install XP, without connecting it to my network. After I do that, then I would connect it to my network to get all of the critical updates XP requires (should take quite a while). Doing it this way, I should be reasonably certain that whatever had infected his machine won't infect any of mine; correct?