Thanks guys~ that's very kind of u~ I've use vista Ultimate for days, and it works fine. my only regret is that it cannot open Aero glass cause the integrated display adapter from intel 915G~ the vista marked 1.0 ~ P4 630 915G 768M 80G 2M 19 CRT O,and also only one thing confused me now , the fonts displayed arenot clearly as XP , even if 1024*768 or 1280*1024 , and i've changed all possibilities from the effects "normal / clearly" maybe (sorry i'm at home & use XP now,i don't know how to explan it clearly )~ maybe it happens only in version of simplified CHS ~