So, after some false starts (part of which is likely because I was a dumb-ass and didn't uninstall the old display drivers), it appears that the graphics card is up and running well.

I have just enough time to log on to FFXI and see how things look. So the true test will be how well it performs in party tonight. W00t!

edit: Oh lord, I *soooooooooooooo* appreciate not having to have my graphics in the game set to "crap" anymore! Thank you Jen!! And thank you Patrick for the recommendation on the card, and for all of the tech support!