I recently purchased a copy of the complete edition of Civ 4. When I put the disk in my computer, nothing happens. Absolutely nothing. I tried to explore the CD under My Computer, but when the computer opened the drive, there was nothing. My computer is basically refusing to acknowledge the disk at all. Any suggestions? Ps, I know for a fact my drive works perfectly, as I have tested it on other disks, but when I put the Civ 4 disk in another computer, it worked okay.