Save your photo to a free site like Shutterfly. Open up the picture in Shutterfly, right click and select properties. Copy the link listed.
Come back to the Basenji Forum, Create a message, select the icon in the new message above that looks like some mountains with a son.
You will see a window open up that says Explorer user panel, put your copied link in there and hit ok, that will put your picture into your message.
I just figured this out last night, there is a post from Admin that tells you how to do it but I am not computer savy so it took me a while to figure it out! LOL!