To get a Motorola Bluetooth wireless PC card (PCMCIA)  (version 2) working with Ubuntu linux, all I had to do was download the windows driver from Motorola and extract (using unzip) the Drivers.W2k/BT3CPCC.bin file to /lib/firmware/BT3CPCC.bin.

This card works correctly, but I am able to get faster transfer times using a USB bluetooth adapter (from ellink). For example, transfering a 1.1MB file from my phone via the USB Ellink adaptor takes 27 seconds, while the same transfer takes 47 seconds using the 3com PCMCIA adapter. It is possible that this adapter is a Bluetooth 1.0 or 1.1 device as opposed to a 2.0 device.