I never use Mapcreate anymore. The new Lakemaster chip has so much info on, I have no use for my old Mapcreate software. Plus, Mapcreate is not the easiest program to use unless you use it a lot.
Hope you are checking out http://www.jollyann.com for you H20C, he has a special going I believe on the unit with the Lakemaster card See Below