If you go into your profile tab and then 'forum profile information' there's a box near the bottom called 'signature'; you just paste the Photobucket IMG link for the photo you want to use in there and it'll appear in your signature. You'll need to resize the photo before you copy the link across though, you can do this on Photobucket in the 'edit' tab that appears above each photo, it should be no more than 150x150 pixels. If you have any problems you can e-mail me the photo and I'll resize it for you.