Missing $60 worth of games??

So a few months ago my computer went through some pretty major troubleshooting, which I only officially got completely fixed as of Sunday night. And now that I can actually turn on my computer, run games, get sound, ect... I decided thats its time I start to question where my $60 Gal Civ 2 pack went? The only game I have listed under "My Games" is the game I used a disk for (Sins). Im not wanting to buy that package too much again, so if anyone might have an idea how to get this fixed I would love to know.

Thx in advance.