Enable bloototh in handset (probably in Data menu), assign BT device name and check "Visible to others"
Go to machine Bluetooth configuration, refresh Bluetooth places and Add your handset device to list
In "Client applications" select virtual COM port assigned to "Bluetooth serial port" or "Bluetooth modem"
Initialize Bluetooth connection from handset side or from machine side as "Bluetooth serial port". To establish connection first time you must entry the same numbers (PINs) at both handset and machine side
Use before the right (virtual) Serial COM port: "\\.\" . For example : \\.\COM49