Looks like the wii whiteboard is available for download (for intrepid) as a nice deb file from their website now.

http://code.google.com/p/linux-white...downloads/list

Unfortunately there's no 64bit deb at the moment.
I haven't had a chance to test it out, it should work nicely though.

If you've got 64bit Ubuntu installed, I'd recommend you either wait for a 64bit deb to be released, or to compile it yourself, or you might be able to get away with downloading libbluetooth2 for Ubuntu 8.04 deb file and installing it in intrepid, then installing the wii whiteboard 64bit deb for ubuntu hardy.