When you hover over your name on the top of the screen a dropdown menu should pop up. One of those options is signature, click on it. Once on that new page there's going to be a bunch of different icons above the textbook... Click on the one that looks like a tree (to the left of the movie reel) and enter the URL of the image you want to use. Alternatively you can just manually enter in the code liek such "[.img]insertyoururlhere[/img]" (when you type it don't include the "." Be mindful of the signature size restrictions though (http://www.josefvstalin.com/wiki/signature-regualtions/) If you want to use an image from your computer, or one you've created you have to host it at a site like photobucket or imageurl and that will provide you with a link to use
