[ubuntu] ATI Radeon Xpress 200M and Ubuntu

I use my Ubuntu from portable HDD on 2 PCs, I have a problem with one of them that has "ATI Radeon Xpress 200M" GPU, I found a website claiming my GPU is fully supported but I don't think it's installed.

CS 1.6 on Wine has the picture all screwed up, and one Linux FPS game (saube-something-something) doesn't run, it starts and closes without even showing black screen.

So I went on this forum to search for help...and I did find something, but since that topic is closed I have to make this new one.

I'm now logged out on the Ubuntu and I'm on the terminal, did the

sudo service gdm stop
sudo apt-get purge xserver-xorg-video-ati 
sudo apt-get install xorg-driver-fglrx

PS: I duo schiz about Ubuntu...or anything Linux-related, I was Windows guy for more than 10 years