There is a known issue with Vista and Blackberry's bluetooth driver. I can still sync my 8130 through Bluetooth. You have to install Vista's bluetooth driver and not the software that comes with the Bluetooth device(dongle). Delete the bluetooth software that came with your bluetooth device and then plug it in and let wondows install their own driver.
Then you have to sync the blackberry with the bluetooth device. After you have synced it it will still not find all the drivers because of the issue Vista has with Blackberry's bluetooth driver.
Then you have to plug your Blackberry into the computer and open up the properties in the device manager and click configure bluetooth. Go through the steps, and then the desktop manager will be able to find your device through bluetooth.
You will only be able to sync contacts, calendar, tasks, etc. No media will sync as of right now.