Never was a PC gamer but both my laptops run on XP and never had any issues with it. Thank god my college was able to sell windows programs for five dollars a piece. won't be upgrading to vista for a long time I hope.
Systems I own (Games)
Sega: Dreamcast (40) , Saturn (25), Genesis (50), Masters System (10), Game Gear (20)
Sony: PS1 (8), PS2 (60) , PS3 (5), PSP (12)
Atari: 2600 (18) , 7800 (10), Lynx (10)