I downloaded command and conquer zero hour and I extracted the file and I have four files a zerhour1 mdf file a zerohour1 mds file and a zerohour2 mds and zerohour2 mdf. I burned them to cds using Alcohol 120% and I loaded the game to my pc. But when I put disk one in to play it it tells me to eject and re-insert the CD-ROM and restart the application. I burned the disk one as an iso file but it said the same thing... any ideas thanks,aaron