How do I play these games I torrented?

Okay, so I've set up two games: Diablo 2 and Simcity 3000 Unlimited. But, I digress. I installed both of them and when I went to play them, a popup blocked it, and it told me that I needed to make sure the games were in the CDROM drive. Since I torrented them and do not have a material disk to put them on, I cannot insert them into the drive. So I'm kind of screwed. Both of the games are mounted on my DAEMON tools lite thingy and installation was fine, and I already got the cd keys in. However, I don't know how to insert a nonexistent game into a drive. What do I do?