Cuda with laptop

I have a Dell, WinXP with a Quadro FX 3700M.

I’ve been making a lot of CAD renderings lately. What is the best way to upgrade my system for faster renderings?

There has been a lot of talk about Cuda cors and the like at Bunkspeed, this is the rendering package ive been using.

Can i add someting like this to a laptop?

Thanks