I have used exchange server and SBS 2003 to sync my imate smartphone 2 via bluetooth to laptop when connected to server via VPN. Its a little tricky to set up as you have to disable certificate checking on the moblie etc. I havent had any luck connecting via GPRS as yet. Ive got my IT consultant looking into it for me. Hes obtained a rather thick white paper from Microsoft but hasnt read it yet.