At the time I upgraded my S170 with an internal Bluetooth installation. I used the k700i as a remote control. Works very well with multiple programs to control. Lately I’ve been using my new Treo 650 to do the same.
As long as your VAIO has bluetooth and has HID function, you are pretty much set to go, as long as you have the actual remote control programs installed on your phone(like Winamp, Windows media plyer, etc…)
Let me know if you need the files, I have a few bunch.