I own almost all of the call of duty (most on computer) and i decided to install then all again (btw i have a windows vista), call of duty 1, works fine. call of duty 2, works fine. call of duty modern warfare, works great. call of duty MW2, works the best. but when i try to play call of duty united offensive on single player, it doesn't work. multi-player works like a charm, but when ever i put in the unscratched call of duty united offensive cd1 it says "please insert correct CD-Rom, select OK and restart application". the same problem happens what ever i do, safe mode, running as administrator, what ever i do it doesn't work! if you could please help me out, i would really appreciate it!
Edited by koolman101, 13 September 2010 - 07:07 PM.