if anyone needs a copy of WinXP, Best Buy is running a deal both in-store and online this week (until 4/2) where you get a $60 gift card with any WinXP purchase. you have to pay full price up front, but you get the $60 to spend at BB later. they're advertising WinXP Home (upgrade) for $89.99, essentially making it a $30 purchase in the long run. the gift card offer also applies to any other XP version though...Home or Pro, upgrade or full. i think it's a pretty good deal if you haven't made the upgrade yet.
you can view the deal in this weeks print ad, or check out the details online