Well looks like I am out of luck with playing this game.
I did look at the FAQ on the site and it had this info..
Q : Why can't we use the driver under the section "Built by ATI" on ATI's web site for our ATI products?
A :On ATI's website, there are two sets of drivers, namely, "Built by ATI" and "Powered by ATI". The former are solely for cards built by ATI herself while the later are for other manufacturers. These two sets of drivers may detect different sub vendor and sub system ID that are manufacturer dependent. ATI has designed the drivers and BIOS as such. Hence, our card can only use the drivers in the "Powered by ATI" Section. ATI Cards by other manufacturers will have the same situation.
However it does not look like ATI has the 2 sets of drivers anymore.
I was going to try and contact HIS but it looks like it will be a nightmare to do as they have no email contact and no phone number other than one in Hong Kong.