Upgrading Graphics Card

Hi everyone,

I apologize if this is in the wrong section. I have been getting into gaming and decided if at all possible to upgrade my graphics card.

I am very unfamiliar with the details needed to confirm such a process. Here are some specs and the OS of my laptop,

Intel core 2 duo CPU p8600 @ 2.40 GHz 2.40 GHz

Memory 4 gb

64 bit

Windows Vista Home Premium

And under display adapters I currently hold: ATI Mobility Radeon HD 3650

I am wondering if my laptop is capable of being upgraded with a new graphics card. If you need more information about my laptop please

do not hesitate to ask. And if it is upgradable could you please direct me to more efficient graphics card pertaining to enhanced gaming.

Thanks