Sorry, don't have an actual link ... but if you go to the AMD
drivers site and look around, you should see a link there for "legacy"
drivers, or something like that. The current 11.x
driver will not work with the X-series cards, as far as I know, but I believe that v10.2 will work. If it doesn't, try one of the 9.x versions.
Whatever you download, make sure it has "legacy" in the filename.
And if it's one of the 9.x versions, I believe that you will have to use XP-compatibility mode with it.
Sorry, but it's been quite a while since I used an x-series ATI card and I'm a little rusty on the details.
Perhaps someone else still using an x-series card can provide more info ...