Bluetooth Pocket PC?

I have purchased the RF-BT-DIP and have been succesful connecting to my laptop with built-in Bluetooth. I have been trying to connect to my Pocket PC and an extra PC using a kensington USB Bluetooth dongle but cannot get anything to work on any other device.

Is there anything I am missing? Could it be security?

The RF-BT-DIP are Class 1 Bluetooth v1.2 devices. Can they be connected to v2.0 devices?

Thanks for any help!

Scott