Guitar Hero II Controller (XBox 360) on Vista

Maybe I should've posted this message in this forum right from the beginning
- I'm just quoting my post from the hardware forums...:

Hello there!
I'm not sure if anybody is familiar with this piece of hardware - it's a
normal USB game controller. =)
Anyway - I've read ALL over the internet that people have no problems at
all with Vista recognizing the guitar as an XBox 360 Controller straight
away... Well... Not for me...

I installed the 1.1 XBox 360 Acessories Software from Microsoft and the
controller kind of installs, but only partially.

What I mean is this:

In the Device Manager I have the XBox 360 controller under the standard
controller for Windows class.

USB\VID_1430&PID_4748&REV_3122

Then I have an USB HID interface device:

USB\VID_1430&PID_4748&IG_00

And then I have an unknown Device under "Other devices":

HID\VID_1430&PID_4748&IG_00

(parent: USB\VID_1430&PID_4748&IG_00\6&1b44eb60&10&00)

The problem is that although the controller IS working in some games it
isn't listed in the control panel under "game controllers" and most
games/programs don't recognize it. I guess they would if the most
important device ID strings weren't in the "unknown device" part, e.g.:

HID_DEVICE_SYSTEM_GAME (this line enables the game controller
functionality in Vista)
HID_DEVICE_UP:0001_U:0005
HID_DEVICE

Does anybody know how to fix this problem? So basically how to make the
controller appear in the "game controllers" list? I've spent half the day on
trying to figure that one out...

Jan Milewski

P.S. The installation process in itself was a bit... strange. At first the
guitar was recognized as a "Guitar Hero X-plorer" and Vista automatically
installed the XBox 360 Controller drivers for it BUT after that the
controller was recognized a second time and this time no drivers could be
found - I ran a driver search on my system and the "second part" of the
controller installed itself as the "HID device/unknown device" combo listed
above...