Hi, thanks for your reply,but i am sorry that i had format my partition after i find the assignment error.so i can't give u my reg file But i used another inst tool and everything goes well (I choose both Inst & boot drive as C),It is also based on Fujianabc's NT6 Fast Installer,but Its interface is Chinese... hope you can find its code and get something useful. http://www.mediafire.com/?6of8xdbm9lmusfb