To use the logo you must add it to your signature. Just click on "My Profile" link in upper right area of this page. You will see a place for adding a signature...make sure the box is checked next to this area. Now copy this into that text box but make sure to remove the quotes in the little boxes around img and /img.
["img"]http://forum.hunting.net/asppg/upfiles/7344/Ec876271040.jpg["/img"]
Go here for a reference:
http://forum.hunting.net/asppg/pgdcode.asp