This is the method I used and it works great and the maps were/are free!
First of all visit:
http://members.shaw.ca/topham/
Visit, http://toporama.cits.nrcan.gc.ca/
Then I basiclly download all of the files at the link below. Ya I know that's over kill.
http://toporama.cits.rncan.gc.ca/images/b50k/03/
I imported the files into OzExplorer. Works really well. Even with moving maps.