Is it possible?

I'd like to try mining with a graphics card but I've only got a laptop, not a desktop. Is there a way to connect a desktop graphics card to a laptop and mine with it? For example, a PCI-e to USB or PCMCIA adapter?

Or alternatively, is it possible to buy an extension cable/riser cable for a laptop GPU? So that way I could keep the GPU cool since it would be mining away from the other components of my laptop.