atioglxx.dll_unloaded

[mospheric]

So quick story. I am new to PCs. I bought a Dell XPS 9000, Radeon HD 5870, windows 7 x64. This was purchased about a month ago. Now I have the chance to play some indie games! Low and behold, Humble Indie Bundle!

Unforunately games like Gish, Aquaria, and Penumbra (I love survivor horror!) cannot run. Windows crash report always brings up atioglxx.dll_unloaded as the fault module name.

I have installed the newest video driver from Dell's website, which was also the default driver it came with (Mar. 2010).

So I installed Penumbra, clicked to play. Black screen for a few sec. Then it crashes stating that I don't have vertex shader support?

I'm a QA lead at work, so if anyone needs logs, things tested, etc, just let me know and how to get certain logs. I know other people with the same problems (xps 9000s) and would like to help to get his solved. Thanks!