got more specs from google...
Radeon HD 4290 (AMD 890GX)
stream processors: 40
GPU clock: 700MHz
Memory clock: 667MHz
Memory size: 128MB (on board) + system memory = 384 mbs
I think your card is just to old GamerGuy, if you bought a 1gb card I think you'd run the game perfectly.
Also if you can, post up your motherboard specs, and even your harddrive specs if you have them.
Also are you 64 bit or 32 bit?
Regardless, I think its time to buy a a new graphics card.
that one is like from the 2003-2005 era...?