Here's a good question from eaglerico:
How does someone add a picture to the signature??
It's not much different than posting a photo in the "Reply Box".
(It's not as hard as it looks.)
1) Click on your Screen Name under your Avatar in the Forum.
2) In the upper-right corner of your Forum Profile Page click on "Edit".
3) You will see the signature box.
4) You can type in sayings and such in that box.
5) Make sure you resize your photo to a reasonable size, and be sure that it is uploaded to a photo site e.g. Photobucket.com or similar site.
6) Make sure that you have "[img ] or [IMG ] at the front of the photo URL and [/img ] or [/IMG ] at the end. (added an extra space in each of the codes to prevent the code from functioning)
7) Click "Update Profile".