Even with all of the working hardware parts, the thing that makes everything work is the software. I initially had some problems finding the right software but I was pointed in the right direction from one of the helpful Sony TR World forum members. You’ll want to download the following installation package:
ftp://ftp.vaio-link.com/pub/Vaio/Bluetooth/BTD_a**_100S_UK.exe
Weighing in at 15MB, this should have everything you need to install the device. It includes the device driver, Virtual COM driver, Wireless Switcher Utility, and the Bluespace NE 3.3 software.
Note: I have found that you cannot simply install the above software as is. You will need to install everything one piece at a time. The Bluespace NE 3.3 software and Wireless Switcher Utility software are standalone as it is. The driver software is hidden inside of the SONY.PAC file located in the archive. You will need to extract the files from here to get to the device and VCOM drivers. You can use the KCAP.EXE software to extract the files. The command would be like the following:
kcap SONY.PAC c:\temp
This will extract several directories into C:\TEMP. The most important files are VCOMM and MS. MS has the actual driver while VCOMM is the com port software. If you don’t have KCAP.EXE do a search on Google for it. You should be able to find it. Also, when you run it from the command line it won’t tell you that it’s doing anything. It simply returns a prompt. That’s normal. You should notice your hard disk light flashing like crazy as it’s extracting the files to wherever you pointed it to.
Lastly, you will want to make sure that your Windows XP installation has all of the latest service pack updates required to support Bluetooth. If you already have installed the PCGA-BA1/A then you should have everything you need. If you’re not sure, you can look in the QFE directory that’s extracted from SONY.PAC and install all of the updates manually.