BT in XP on MBA is extermely limited. Sure I get the mouse to work, etc, but no stereo headsets, ete, etc. Running .These use the VERY BAD XP BT Stack drivers. This offers no advanced features., The better performing BT drivers are made by Walcolm. I have found SW that will allow me to install the BT programs that include these drivers, but nothing recognizes the MBA BT radio. Ubder Device Manager, there is no listing for the radio, so there is no hardware I can ask to update with these drivers. I have spent many hours searching for the answer. Based on this, I see many, many others are also searching on: HOW TO USE THE WALCOM (or any that actually work) BT DRIVERS ON A MBA, OR ANY MB RUNNING XP (AND VISTA HAS SAME PROBLEM). If anyone tryly knows how to do this, I will be happy to post the answer here and on the many forums I have searched. Thank you in advance.