Drivers for Game controller not loading

I posted another question about this earlier, but I think my choice of
wording may have scared people off.

Anyhow, I have an older Gravis Eliminator Aftershock game controller that
has software which allows it to act like a Mouse, Keyboard, a Direct X game
controller or any combination of the above.

It works great in XP Pro, but i can't get the drivers to load properly in
Vista RC1.

The controller is USB, and it is showing up just fine in the Game
Controllers, but without the additional drivers loading properly, it is
pretty much useless in Vista because most, if not all, of the games I play do
NOT support game controllers: only Mouse and Keyboard.

I have tried running the installer as "Administrator" and I have tried
disabling the driver signing check by pressing F8 at boot.

The software appears to install just fine, then it says something like
"Updating your Devices" and then asks me to re-boot, which I do.

After re-booting, it still is not loading the propper drivers to allow the
controllers various buttons and axises to be programed as Mouse/Keyboard.

I have E-Mailed Gravis, and still no response. I don't think they plan on
updating the software for Vista.

Am I missing something? Is there any other way that I might be able to get
this to work?

I really do enjoy gaming, but I just can't get used to Mouse/Keyboard
controlls and though this controller is old, it can have up to 36 keys AND
full Mouse control programed into it. Plus, I just so happened to have 3 more
BRAND NEW ones, still in boxes that I bought from Ebay to have as spares!

Any help would be greatly appreciated,
Thank You...