I am having the same problem and I am ready to scream!!!!
I bought a new Camera a fuji and Vista will not download pictures, it won;t even show up on the computer. I have uninstalled andinstalled the fuji software and updates for it 6 times!!
I thought okay I will just pull out the memory card and download pictures direct to the computer, well now it won't recognize that.
The first few times I installed the fuji software it would work the first time I hooked up camera but the minute I unhooked it and took more pictures then went to hook it up again back to no recognition.
I also know that it is not the camera or usb cord as when I plug this into my laptop with Window Xp both start up with camera hooked up via usb cord or if memory card.
If anyone has the answers please let us know,a camera is pretty uselss if you can't download the pictures.