In C:\Documents and Settings\All Users\Application Data\GARMIN\Maps I have CNNT NA 2011.31 gmapprom.rar (parts 1-5), these are WinRAR archive. Also have gmapprom.img, IMG File 1,356,384 KB

I have no maps in Manage map product window.

After installing MapSource from Garmin, I was prompted to launch the application. Should I have not launched it before I replaced the .exe?