Right click on the picture.
Go down to where it says properties. Click on it.
Once in properties, you will see what looks like a website address.
Hi-lite it and on your keyboard do Ctrl C to copy it.
Then go into your contols. click on signature.
Then do two image tags, like this
and inside them, put in the address, by doing, Ctrl V, to paste (alternatively, you can right click them and do copy and paste that way).
Click submit, and you will have your picture!
Actually, because it Christmas, here is the address:
http
/www.fishforums.net/uploads/post-24-1103883934.jpg
Now you just have to do the hiliting bit.
Also, sorry it isn't the best, and outside of regulations, but I had very little time, and because its Christmas, I think they'll let you keep it!