I set this up last night in 5 minutes. I have a Latitude D600 with no built in Bluetooth and an OptiPlex GX280 at the office. I baught the 10m Belkin Bluetooth adaptor, plugged it in and in 60 seconds the XP SP2 drivers had been installed.
I followed the steps in the article on blackberry.com and it worked like a charm, VERY cool. Now I can sit in my office at my desk and not get e-mails to my Blackberry, which is awesome
The Dell Bluetooth module is supposed by XP SP2, but you cannot install the drivers. You must use the XP SP2 built in drivers, and you must disable 2 Bluetooth IT Policy settings on the BES, assuming you are on a BES server, which requires 4.0 SP3, or 4.1 when available.