With a Sempron CPU and integrated video, it won't be a good gamer.
You could add an AGP 8X card.
Note that a higher-end AGP 8X card may require a PSU upgrade.
1GB RAM should be enough for Internet apps.
BOTTOM LINE: If you want to play high-end games, don't upgrade--start with a new computer.
I have an eMachines T3104
i want to upgrade this to play games.
& to work well with internet.
I WANT 2GB RAM