I don't know... all of my friends' windows machines blow up (not litterally). After a few times they learned how to re-install it themselves, I showed them how to secure it (all the usual stuff), they stopped using kazaa, they stopped using IE.
Many just use it for gaming exclusively, and you know what? it still fucks up. Windows 2000/xp made me feel hope for the windows platform, but that no longer exists. I'll have to see what happens with vista, but I'm not holding my breath
(working in Staples, I'll probably get a legit lisence of windows vista professional when it is released... I *might* test it out... we'll see)