Asus G72 laptop video card.?

I am wondering if I am able to purchase and replace the video card in my laptop. As stated above, I have an Asus G72 laptop with the gtx260 nvidia video card. Is there a way to pull out and replace this card either myself or through a 3rd party computer repair company? Thx for responses...|||Afraid on a laptop you cant, as it is embedded onto the motherboard, sorry.