gbporkpie

Hi guys. Just got my new laptop (see topic), and immediately went to YouGamers: PC Game Reviews, Previews, News, Articles, Hardware Requirements and the Game-o-Meter to see how some games would run on it. But it didn't recognise my GPU (Mobility Radeon x1900), which led me to search for new drivers on ATI's homepage, but there were none for my model. Which led me here, where I tried to go through the mobility modder installation instructions, but the DriverHeaven ATI Catalyst drivers didn't work either (just wouldn't launch).

So what step am I missing? What do I need to do to get the full performance out of my GPU? Total newbie here.

EDIT: OS is Vista