Brian, there's other free software around that can do the debayering as well - have a look at the netpbm toolkit (netpbm.sourceforge.net), in particular the pambayer tool.

If you have a modern linux system around there somewhere it will have the netpbm tools installed, as well as other tools like imagemagick that will have the same capabilities.

You can also get the netpbm tools for Windows, not as nice but will do the job.

cheers, Bird