Its very interesting ..............
Hidden Bluetooth service in Windows XP and Vista..
Hidden blue tooth software in win. XP and vista
Now you don't need 2 install any software for ur blutooth device.
you don't know but u already had it in ur window xp nd vista
it can b used as:-
1.open d run command
2.now type 'fsquirt' without quotes ''
3.now just select weder u want 2 send or receive any file very easy ......