It works on bluetooth. I'm using K610i and using BlueSoleil to connect to bluetooth.
You have to connect via Bluetooth Serial Port Services and make sure that which COM port that you are using. I am using COM port 4 and on the phone explorer, I click File > Option and Select COM 4 Bluetooth Serial Port and WALLA!!! I'm connected.
Give it a try and tell me if it works.
Thumbs up!!!