ye, i had gta 4 running on almost those exact same specifications, i ran the game on low settings at about 25-35 frames per second (playable on gta 4 if you're that desperate), my performance increased though with the latest patch to about a stable 35 frames per/s (enjoyable enough). I was running the resolution at 1024*768. That info will cost you a mere 50 bucks, you can pay me through Paypal.