OK, as an example:
Install dir = D:\Battlefront\Combat Mission Red Thunder (sub directories Data, Misc, Mod Tools)
Userdata = D:\Documents\Battlefront\Combat Mission\Red Thunder (sub directories Game Files, User Data)
If I want to add a map (containing the BTT, BMP (called null special editor overlay.bmp) and a JPG file) to the Quick Battle Map Selection menu where would I place the BTT, BMP and the JPG files?