I have a 945GM Express Chipset family graphics card and I'm looking to upgrade it, because I've heard it's shit. It says its integrated, but I don't know what that means and I don't even know if you can upgrade on a laptop(what I'm looking to upgrade on).

My question is what new card should I get?

I play a lot of games and I'm looking for this to be able to run Bioshock at least on medium.

Any help would be very appreciated.

Note I know nothing about graphics cards.