Thanks for your help on this. With a bit more trial and error (actually quite a bit) I was able to figure out how to do what I needed. I'm fine with having two seperate files served on the snowmobile club's website (they're small files anyway) for the MAC and Windows versions. I need to be able to upload a single file for each of them and I'm not sure how to make that happen for the MAC version. I don't have a MAC but I have a friend who has one and is familiar with building web-sites so I'll check with him first.
Also, one of the reasons I chose to use INNOSetup and the gmapi version of the installer is that earlier in the post there was some concern that the registry installation system might get phased out by GARMIN. If that happens, will there be a new version of the cGPSmapper software? I might be wrong but if GARMIN makes it so the registry installed maps don't work then cGPSmapper would stop working and the current process of using cGPSmapper followed by MapConverter to get the files and folder structure needed for the gmapi installation wouldn't work either. Is there an update to cGPSmapper in the works to possibly compile the maps directly into a gmapi structure?
Also, one of the reasons I chose to use INNOSetup and the gmapi version of the installer is that earlier in the post there was some concern that the registry installation system might get phased out by GARMIN. If that happens, will there be a new version of the cGPSmapper software? I might be wrong but if GARMIN makes it so the registry installed maps don't work then cGPSmapper would stop working and the current process of using cGPSmapper followed by MapConverter to get the files and folder structure needed for the gmapi installation wouldn't work either. Is there an update to cGPSmapper in the works to possibly compile the maps directly into a gmapi structure?