Hi.
First determine size of image (e.g., 200 x 100 pixels)
Use the Draw menu, Insert File. Pick your picture.
You can embed it and treat it like any other object (makes map file size large) or not and leave it as a reference (smaller map file size).

You'll be asked to pick your starting point and end point (asked for coordinates on the command line).
I usually go with 0,0 for first coordinate and then use the image size for the second coordinate (e.g., my 200x100 image would be entered as 200,100) If that is too large/small you can undo and retry.