David, if you don't use the omegas, ATI's catylyst 5.2 are for almost all of the cards, x800 series included. The friend I installed them for has a x800xt PE
and the difference was amazing, much better than the 5.1s. I have not, however tried the omegas on his pc. so maybe try both and see which you prefer.
ATI catalyst 5.2