Thanks guys!
I've been trying to get my new 33" monitor to work as my secondary screen using one of the several old-ish ATI cards I had lying around.
I've basically gotten it to work, but because I'm temporarily using a DMI-to-VGA output, I have a bit of ghosting. Hopefully it's just because I am using an old crappy VGA cable. Once I get an HDMI output to work (or that 'display port', what ever that is) it should look even better.