I recently bought a new Compaq the SR1750NX. AMD 3500+ 1GB of RAM Integated ATi xpress 200 300w stock PSU I'm wanting to upgrade the video card in my new comuter, but I'm not sure if the 300w PSU could handle the 6800gs I want to put in it. I think I have to have a seperate pci-e power connector to run it too. Should I upgrade my PSU or buy a diffrent card? Thanks!