Ubuntu Installation :: Two Monitors On Two Graphic Cards?

I'm using Ubuntu 11.04. I should have two graphic cards, and they are both detected in the terminal.

Code:
lspci | grep VGA
02:00.0 VGA compatible controller [0300]: nVidia Corporation C77 [GeForce 8200] [10de:084b] (rev a2)
03:00.0 VGA compatible controller [0300]: nVidia Corporation G98 [GeForce 8400GS] [10de:10c3] (rev a2)

Both cards have monitors plugged into their VGA ports, but only one of the monitors shows a display. The other monitor goes into power saver mode right after start up. Nvidia X Server settings only shows a single graphics card (the 8200) and a single monitor (detect monitor finds nothing). Going through Prefences: Monitors also only shows a single monitor and doesn't detect a thing when detect monitors is clicked.

Monitor one has 1440 x 900 resolution and I'm not sure what the resolution of Monitor two is supposed to be, but it displays rather nicely at being set to 1440 x 900.

Both graphics cards are detected and usable in Vista, but a quick switch of the plugs shows that only the 8200 is registering in Ubuntu.

Ideally I want to have a dual monitor set up, with one screen showing documents or pictures with the other using Gimp or Blender.