A small amount of tweakery resulted in a working build. I also had to move some kernel modules into the right place but other than that (and having to install a dozen or so packages to support the build process) it's been a sucess. comedi_test has returned the correct configuration info for the installed card.

Looks like kubuntu stays!

Just out of interest, seeing as the comedi-source will not build under Dapper in it's current state, should I tell someone?