Yeah, it does have a pretty bad graphics card
Graphics processor - SiS 741
Its actually onboard like most laptop video cards are, so I'm afraid, no its not updatable
It'd also be almost impossible to replace the motherboard on a laptop, and if you really wanted to play 3D games, you could have chosen a laptop with a better performing video card
I'm afraid unless you took it back and exchanged it, you'd be stuck with what you've got.