Not sure what to make of this error...

[prator]

I can get the game up and running okay. I get to the starting menu, select "New Game," watching the opening cutscene, see the loading screen... and then the game crashes. I then get an error message stating that:

"Penumbra demo.exe caused an EXCEPTION_ACCESS_VIOLATION in module ig4dev32.dll at 001B:048E9E8A, devProcessAttach()+89274 byte(s)"

At first, I thought it was a graphics card error, but this is the computer I'm using. It's only a few days old, and I'm reasonably sure that the "X3100" media accelerator thingy is one of the cards that this game supports...

'Lil help here, please?