How can i find out if i can put a video card in my laptop?

i have a dell xps m140 and the video card that i have is not very good at all. i was wondering if it would be possible if i could put a better video card into, and if i could, what kind would i need. i do not know alot about video cards, so any suggestions would be greatly appreciated.|||ithink video cards of laptops are not upgradable|||its not possible without replacing motherboard|||sorry u cant|||Sadly the only way to put another vid card in your laptop is to get a new motherboard, the graphic card are attached to the board itself, i was looking to do the same thing and i found out that you cant, sorry for the bad news, you could buy the max memory that you laptop will hold this will help you a little, good luck|||laptops graphics cards are not upgradable.