Well, the machine has 98SE right now, and it has some problem where it locks up after booting for several minutes, and periodically after that. No BSODs, but I've spent some time trying to debug it without any luck, and am thinking that I may just reinstall Windows, and wondering whether it's better to do 98 again or just do XP. I have an unused copy of XP Pro laying around from one of the Hot Deals.