If I purchase a game on my current computer from Steam, am I able to transfer it to my other Gaming PC. I'm asking this because Arma 2 Complete Edition is $8.00 right now and I really want to get it but I don't have my gaming PC yet. Also do I need to install Steam in order to buy a game?
When I download steam on my gaming PC, will I be prompted to download Arma 2 Complete Edition since I bought it already or do I have to download it to my HDD on this computer. If I do have to install Steam and put Arma 2 Complete Edition on this HDD, then I won't bother.
Wrong, it lasts as long as your subscription service (the games you buy are not games, or keys or whatever, they're just subscriptions that allow you to play games on their DRM software) with Steam lasts.
Which, judging by the way it's monopolizing games on PC, is forever.