I'm not much of a gamer, but I took a look at the specs and did a few searches on the cards. It looks like it will work good for that. As someone else mentioned, the only thing that I'd be concerned with is the Hard Disk. 80g is really small these days. :) If the only thing he ever did was play DDO, then you're fine. If you have the ability/option to get a larger drive, I'd recommend doing it now.

Other than that, good job. :)