Vista fails to install EOS driver - selects "Digital Still Camera"?

I can't get Vista to properly connect to my EOS 450D (Xsi).

I DON'T want to connect to download images, but to use REMOTE CAPTURE.

Here's the thing:

1. I have installed (and reinstalled) the entire EOS Digital Solution suite before connecting the camera

2. The camera is fully charged and says "Busy" on the LCD when attached with USB.
3. Windows regognizes a new hardware and pops up a bubble...

4. Windows: "Installing devide driver software: installing Canon Digital Camera " + "Searching preconfigured driver folders..."

5. After a few seconds Vista changes its mind (?) and it says Digital Still Camera Failed. "Device driver was not successfully installed."

6. The device manager (right click My computer + Manage) lists the camera as a Portable device with a yellow warning triangle.
7. Uninstalling the driver does not help.

I suspect this has something to do with Vista SERVICE PACK 1, since it does work on another Vista computer without SP1.

Has anyone got remote shooting working for an EOS camera connected to a Vista computer using Service Pack 1?

Sincerely
Robert

Update:

When going to Computer Management > Device manager > double click Digital Still Camera with warning triangle, Vista reports:

"Windows has determined the driver software for your device is up to date: Digital Still Camera."

The driver dates back to 2006-06-21. Long before the 450D was created!

Uninstalling/reinstalling just gives me the same result.

This thread seems to have similar issues and resolved it somewhow, only I'm not that lucky.

http://forums.dpreview.com/forums/readflat.asp?forum=1019&message=27452645&q=canon+vista&qf=m

My EOS 350D is connected perfectly to Vista Pack 1 (Beta) and I can enjoy using remote shooting. No Problem.

But I can't get Vista to properly connect to my new EOS 450D, Very disappointed.

EOS 350D ia working flawlessly with Vista as well as EOS 450D is working well to Windows Professional 2000.

Has anyone got remote shooting working for an EOS 450D camera connected to a Vista computer using Service Pack 1?

Sincerely

Chris