Why can't I play this game ?

When I play Cabalas big game hunter 2006 trophy season I can only play it on 800x600. My screen resolution is 1280x1024 but if I turn it up to that the game gets insanely laggy. My specs exceed those that are required to play the game. Why can't I play it on the highest setting? Is it because of my graphics card?

My specs:

MS Windows XP SP2

AMD Athlon 64 processor 4000 + 2.4 GHz

894mb ram

NVIDIA Gforce 6100

200GB Hard drive

Try to update your drivers first, if ti dont help update your game or just look out to see if your game has an know issue.

If this all donthelp think about buying an new video card, the Geforce 6800 is abit old but i still use it cause it really worth cost-benefit

ProudLarry is right.

Any graphics card is fine, but some allow you to have better graphics (and run more games) while others aren't as 'powerful'.
NVIDIA Geforce is not one of them, as (like said) it's an intergrated video card.