What game are you trying to run?... I'm guessing Battlefield 2? Either way you are going to have to face one HUGE fact. AGP is all but dead. You have absolutely NO upgrade options apart from what's on the market now. I suggest a new compy altogether. If you don't have the budget for it then I'll just say it. You're pretty much screwed. Sorry to be the bearer of bad news but AGP is crap. Even the once mighty 9800XT is dead and gone. The only cards you can get are way overpriced and hard to find. People have to realize that computers are changing every day and old technology is exactly that, old. It doesn't matter if it still works, it's just plain out dated.
The AGP 6800GT also comes at a hefty premium. And it won't run "everything" but it will do well in most games.
