ATI Display Drivers - Code 43, Code 37, Code 10

> Hello,
>
> I have been having quite a few difficulties with installing a
> Vista-compatible Radeon driver for a Radeon 9550 256MB AGP card.
>
> I have tried the following:
> 1) default ATI Radeon 9550 driver (WDDM) -> code 43 (device reported
> problem)
> 2) Standard VGA driver -> code 10 (device cannot start)
> 3) ATI Radeon 9550 driver for Vista Beta 2 -> code 43 (device reported
> problem)
> 4) ATI Radeon 9550 driver for Vista Beta 1 -> code 37 (driver could not be
> initialised)
> 5) Catalyst 6.6 XP driver -> okay (but no Aero as it is not WDDM)
>
> The Performance Rating and Tools section cannot detect the video card, nor
> gaming graphics. However, the ratings are 2.0 and 3.2, respectively.
>
> The motherboard is a ASUS P4S8X-X with a SiS 648 chipset. I have tried
> replacing the default Vista AGP driver with a SiS XP driver, but it makes no
> difference.
>
> I have reinstalled Vista Beta 2 onto a clean, formatted parition before
> installing each driver. I have also used the "Check for Solutions" utility,
> but so far, no solution has been found.
>
> I have searched the Vista newgroups and the Internet, but the few solutions
> which I found did not work.
>
> I realise this is a beta build, but it would be very nice to personally see
> what Aero looks like as there has been a lot of fuss about it.
>
> Any help would be greatly appreciated.
>
> Jake.
>