So I've been wanting to play Orange Box for quite some time. So I decided that I'd give the free Half Life 2 demo a try on my computer to see if it was worth buying, and was possible to configure. I was able to successfully install and run STEAM on WINE with my MacBook, however when I start the demo I hear a noise, but the screen turns black except for the dock and the menu bar. I can see the half life 2 screen briefly if I hit the expose button, but that's it. After about 2 minutes Half Life 2 quits out and I'm back in STEAM, does anyone know how to fix this problem, or has had it before?