I can;t get the new DUN option to work on my Sprint treo650 using a D-Link DBT-120 bluetooth usb device.

I have been able to get the 650 to sync with my laptop via USB, so they do connect.

I also found in the bluetooth on 650 where to activate DUN, and I did that and even saw a new icon on the 650 for the DUN.

But I don;t know how to get DUN to work with my laptop.

Somewhere it said to double click the blue configuration icon on my laptop, but when i do this it gives me an error BTwizard "Bluetooth device not found"

Can anyone help please?
thx.