Okay, here is the deal. I found an box of old computer games when I was helping my mom clean out her storage unit. One of the games in it is the original Half-Life that I played back in 1999. I really want to install this on my computer but, it's not letting me. When I put the disk in my computer it will pop up the screen saying to install, but when I click that it won't do anything. I'm not quite sure what to do, but I would really like to play HL again. If someone knows a solution that doesn't require going through Steam, it would be much appreciated. Thanks. I forgot to mention that I'm running Vista 64-bit.