What the hell do I do...

[DamnNoHtml]

You should've tried the free demo as your graphic card seems to be unable to play the game.

Still, if you can update your graphic card drivers there is a faint chance you can play the game in lowest settings.

Even so, with 512 MB of RAM and an ancient generic graphics card, there is pretty much no chance of him actually playing normally.

That computer sounds very ancient, you should look into upgrading if you want to play PC games.