How can I tell if I can put a better video card in my laptop?

I heard something about like a PCI slot? Don't know if I got the letters right on that, but something around PCI. I have an NVIDIA GeForce 8200m video card right now and it sucks at any game except diablo 2. Should I just bring it in to the computer shop and see what the dude there says I could do?|||you could try searching microsft.com or even google they should have

some answers if you tell them what laptop you got and stuff about your computer