Kensington Bluetooth 2.0 USB Adapter Model 33348 Under Vista 64-bit
To get this working with Vista x64, first run cmd.exe as administrator and run the following command inside it: bcdedit -set loadoptions DDISABLE_INTEGRITY_CHECKS
After this is done grab Broadcom’s drivers for the chip and run it. This updater will download a 33mb install file that it will run automatically which will install a series of drivers and associated Bluetooth stuff. You’ll get 8 or so popups asking about unsigned drivers – hit allow for each of them. At the end of install it will bitch about not allowing one of the unsigned drivers to load – I think this is ok and is DUN related but I don’t use DUN so that feature may or may not work.
Please post your experiences in the comments.
Update 4/28/2008 – People are reporting more success with drivers linked from comments #10 and #11.