1. You should have posted this in the OziExplorer section not the GeneralGPSChat section.
2. The bmp images are not converted, you still need these as they are, you are creating a second (*.map) file for each image.
Not sure why you need to do this??
After calibrating, I need to identify the top left and bottom right map extremity lat and long
A. Calibration points can be placed anywhere on an image that is suitable. Does not have to be at the corners.
B. You do need to locate a calibration point with a mouse click for each one, no other way of doing this.
Sorry to sound pedantic in my response, but it sounds like you are jumping into something you do not fully understand
perhaps try re-reading the Help section in Ozi about calibration again.
converting a heap of bmp image maps
yacht racing at RMYS
Lake Mountain Ski Patrol
bush walking anywhere in Vic