games that are appropriate for my pc

as you can see under my specs i have a pretty old pc, i am able to play nfs u2 and postal 2 on reasonable settings, anyother that i could play?

Maybe a lot of the older games (2000 and before). Do you like racing games then? NFS: High Stakes and NFS: Porsche Unleashed are both excellent. However, with both of them, you will have to download extra files for it to even work. If your PC can handle it, I also suggest the old "Homeworld" games if you're into outerspace strategy games.

If you're into Mechwarrior or as it's really called; Battletech, then the games Mechwarrior's 3 & 4, MW4: Mercenaries are a couple fun games.

Carmageddon 1 & 2 are pretty awesome (but also not for the feint of heart).

Here is the list of Games you can try

Racing

Hard Truck: 18 Wheels of Steel
GTR 2
Need for Speed III: Hot Pursuit
Colin McRae Rally 04
F1 2002
Midnight Club II
Colin McRae Rally 3
Motocross Madness
Driver

RPG

Age of Mythology
Age of Empires 2
Diablo II
Rise of Nations
Homeworld
Medieval:Total War
Commondos
Command and Conquer:Red Alert 2
Warcraft III:The Frozen Throne
Empire Earth
Total Annihilation
Commandos 3: Destination Berlin

FPS

Team Fortress
Half Life
Halo: Combat Evolved
Medal of Honor Pacific Assault
Doom 3
Unreal Tournament
Unreal
Brothers in Arms: Road to Hill 30
Battlefield 2142
Quake III Arena
Black Hawk Down
Soldier of Fortune II: Double Helix

IF you have interest to particular genre of games you can ask .:)