Rs used to run soo smooth for me in Windows ME - I was gutted when my dad changed it over to XP! Now i don't play RS, i have my own computer and i absolutely despise Windows Vista.. I think i just don't like change! (though vista is poor) UGHHHH, when I first played I was running windows Millennium Edition and I could never get rs to run for 5 minutes without freezing lol. Luckily it wasn't too long before I changed to Windows 2000 then XP.