I'm running XP Pro with a Pentium II 350, 256MB RAM, and 32MB Diamond Viper V770 Ultra.

I LOVE it! I was pleasantly surprised to find out that everything was recognized by XP (except my Mustek 1200ED scanner - I'm waiting for Mustek to release an XP driver...if they ever do). This really surprised me because I installed it on a Gateway 2000 computer. XP even recognized the Gateway Telepath modem as well as my cable modem.

I'll never go back!