First, can you please only quote the map, not all of its nations? Thanks. Okay, once you're done with that, next to the "Open" there will be a "Save As...". Click that, and type the name of the picture you would like it to have, make sure it's in the "My Pictures" folder, then click "Save." Then, when you reply with the picture, do you see the paper clip next to the smily and undo/redo buttons? Click that, click on the first "choose file," find your file, click "Open", then "Upload". Then just type out your post, and the picture will be an attachment!
Whew.