BTW, you can buy XP really cheap.
Just pick up an old Machine online (maybe 50 bucks) and the code should be on a sticker on the box.
You can use that code on any machine.
Yeah, just bought a [supposedly] new copy of XP on eBay for $40 the other night. Will put it on my spare laptop which basically will exist to transmit my weather station data to WeatherUnderground.
I run 7 on my primary laptop, but have not found one single thing about it that I find an improvement over XP. In fact, I really, really hate that there is apparently no file-indexing other than by name.
In many directories, I like to sort by date and it's painful to get a listing. Ditto "All Programs" on the Start Menu. Very annoying lag to list them.