lol, you can always do something naughty for a dollar
My XP Corp always works 100% with WGA, probably because the keys that I use for it are legal, and since its corporate I really only need one of them, but I got more than one because I got my connections with people who's sucker businesses use XP Pro.
Go with Ubuntu man!!! Or maybe dual-boot!!!!! lol
I try to avoid using XP, I still have a hologramemd Win2K Pro CD that I try to use when I'm running windows, it runs oh-so-smooth and doesn't hog anything at all, just get rid of the default explorer shell and install bb4win and I'm set.