I bought an LM Technologies Bluetooth USB dongle that said it was Vista compatible.
After having no luck with the discs that came with the thing, nor the latest Broadcom driver, I decided to try these instructions:
http://www.dev-hack.com/forum/viewtopic.php?t=1297
Now I have the Bluetooth icon, my mobile can see and pair with the computer, however every single time I try to do anything with the Bluetooth icons on my PC the "Bluetooth Setup wizard" appears. I go through it, choose options, etc, but then as soon as I go to use it next time, the "Bluetooth Setup wizard" appears again.
If I try to send a file from my mobile to the PC, my phone says "Bluetooth connection failes" (the little Bluetooth tray icon on my PC flashes green for a fraction of a second)
Driving me mad for months!