Rich's Tongfamily (Richtong.net add-on)

WindowsDevCenter.com: Getting Your Bluetooth Headset to Work in XP. _Argh, I have a bluetooth headset and a Bluetooth adapter, but it won’t work with the default driver in SP2._
The problem with the Bluetooth stack built into Windows XP SP 2 is that it has limited support for profiles. In particular, it does not support the Headset profile required to connect with Bluetooth headsets, and hence your Bluetooth headsets will not be able to work with your Windows XP PC.
You need to figure out what actual Bluetooth adapter you have and load the appropriate Widcomm stack so that you can use your headset. Of course, my adapter doesn’t have a brand name and just a mysterious FCC ID of QW3-BTCA01 that someone on “Howard Forums”:http://www.howardforums.com/archive/topic/563654-1.html also has. Some more googling shows that this is the “Desma Bluetooth USB”:http://tuxmobil.org/pcmcia_cf_desma.html which in the “Desma”:http://www.desmaco.com/product.php?item_id=15 site is called model BT111FTT02.
For the same reason, the very cool Sony VAIO notebooks won’t use a Bluetooth headset for VOIP or anything else according to “Mobilewhack.com”:http://www.mobilewhack.com/reviews/sony_ericsson_bluetooth_headset_hbh-608_for_sony_vaio_laptops.html. Arggh. My kingdom for a Bluetooth headset driver for Windows XP SP2.