It really depends on what's needed for them to work. If it's just including a package (like we did for 915resolution), then there's no problem as long as these drivers fit on the CD. But if it requires configuration and better hardware detection... then I'm afraid we won't do it. The reason is simple: we don't have any of these graphic cards.. and it's hard for us to test it.
Can you describe the exact steps you go through when installing the ATI driver manually ?