I know this is a long shot, this being primarily a Mac forum but... I have the original Half Life for PC that I purchased a longgg while back. Recently I tried to install it on my PC (running XP) but nothing happens when I click install. I looked online and found some posts where people said if you had Steam you'd be able to install and play it on XP, but info was lacking. I figured that maybe I could download Half Life via Steam and then activate it with my original serial number. But I've found no way to download, unless I pay for it up front and while it's not a lot ($10), I'd prefer not to pay for a game I all ready have. I do have a support question posted with Steam Support but in the meantime, anyone here familiar with Valve's Steam have a suggestion for a solution? Thanks!