Portal is a nice game! All gamers who are fans of Portal should join this group... ;D
There, I made some more icons and pack version 1.0 is finished. I dunno if there are any Portal fans here who have RocketDock but if you don't and if you want to check it out, here is their website: Rocketdock.com
You can download the pack here: United3dartists.com or here: Rocketdock.com