Are there any websites where I can buy and download older PC games?

I am looking for a website where I canpurchase old games and download them to my hard drive.

Games Like System Shock 1 and 2 for example.

Check out http://www.gog.com/en/frontpage/

I don't see the System Shock games though.

Here you go...

http://gog.com/en/frontpage/

Thank you guys, that helps me. I can play Fallout 1 and 2! :)

Didn't see System Shock 1 or 2, though. I may have to send EA a letter petitioning them to re-release it.