Get a gaming computer like me and Orange. I got portal and beat it in less than an hour like usual. If I want to beat it again, I'll post pics. I just wanted to get it for models in Gmod and never bought it so I'm glad it's free.
Hope you realize Portal was never made to really be played for more then an Hour. Anyway, no difference for me, mine still works fine, just need to get my Steam working on my mac.
Anyone try to go to aperturescience.com? It's pretty funny and gives a backround to the game. "The graffiti in the game are clues for the ApertureScience.com website. Go to the site, and enter "LOGIN" as a command. Enter "CJOHNSON" as a username and "TIER3" as a password. After logging in, type "HELP" for a list of commands. In addition to logging in as "CJOHNSON" (Chell), you can login as anyone desired by typing a username longer than two characters and using "portal" as a password."