Bluez (Linux bluetooth driver) works with many BT-Serial devices, but it does not work with the 2.2 kernel. This is probably a hurdle unless mlord gets a new distro working with an upgraded kernel. I doubt they would write a driver to work with 2.2, especially since they might be able to use pieces of Bluez.

This device seems very promising for PDA->Empeg BT connectivity (this was found by kendrick) since it does not require any drivers, it emulates a serial port. I probably will investigate using this for Palm->Empeg connectivity sometime in the near future.