Right click on the image, then copy that URL over into your Signature box in your profile. Type [img]in%20front%20of%20the%20URL,%20and[/img] after it. Hit Preview just to check it's operation. If OK, hit Submit and your profile will update.
I can't get the Moosie to show up in my signature. I put the code in with the image tags, but the text next to the box in the "update profile" area says that HTML is off and I'm not sure how to get it to say "on".[/code]