New videocard in a laptop

My question is: Can i put a new videocard in my laptop?

please i really need to know because with this card (a 128 MB card) allmost on all new games the resolution suxz. And i find that myself sad because i really want to play the games that are on the market. But i can play them but it has no use because my laptop lag's mostly all games. A example: with NFS Pro street. Well the game lag's and the graf's are awful. My processor is 2 GB so that is fine. But i know it is my videocard and i really need to know if i can change the card.

Meanwhile thank's for the response

:(

why do people think they can game WELL on laptops?!!

1. get a desktop if you want to get serious about gaming

2. depending on where you got your laptop you will probaly have to go thru them to upgrade....cuz thats how it works... i think...

Well okey,

Yeah i know buy a desktop and game but why should i buy a pc if this laptop is allso good enough. But i just wanted to know if i can place a new videocard in my laptop that's all