Install dedicated graphics on Laptop with PCI/PCI-e

I might sound like a noob or a derp, but is it possible? I have, on my laptop motherboard, a:
PCI-e x16 slot available
PCI-Express 2 x1 available
PCI-Express 3 x1 available
PCI-Express 5 x4 available

I am looking to enlarge my amount of RAM from 5.75 GB to 6 GB. Please be nice if it's not possible.
 


1) Good. Cause I thought of it as a Desktop.
2) I don't like external. That would be too hard to carry around.