I picked up a map book a few years back that I think was called "Ontario back country mapbook" or something to that effect. There are several versions. One is for cottage roads, one for hiking trails and another for snomobile routes. indigo should have them. In any case, these map books have detailed maps of the country areas, showing trails, lake, old train tracks, etc and they are all georeferenced.
What I did was to scan the maps using 200dpi resolution and then to geo calibrate them for use with Fugawi. They could also be used with any raster-based GPS nav s/w for the PDA (Including Fugawi). In fact, I downloaded the Fugawi 10 day demo (
www.fugawi.com) which includes the Palm and PPC apps and played with it. The PDA apps don't seem to expire but I didn't check to see if you can create custom PDA maps after the 10 days are up.
I already own Fugawi v2 and v3.4 and I'm not planning (at this point) in upgrading to v4 as the PDA apps are not 'nice' enough yet.
I think Ozi has a PDA version.