I tried to download the Alabama topo maps from the custom maps page, but it didn't work! It says it was installed,but it doesn't show up in Mapsource! I downloaded the Mississippi topo without any issues at all. Am I doing something wrong?
Sounds like the AL topo might have been the first one you installed on a 64-bit PC running Windows 7. The MS topo used a 32-bit installer. If so, uninstall the AL topo, then reinstall it. There seams to be an issue with the 64-bit installer which 'corrects' if a mapset using a 32-bit installer is first installed.