Please note that html is NOT working for Sig pictures.
Any code with these tags <> will not work. Please use BBC tags 
Picture Hosting Sites
1. Begin by selecting an image.
All signatures must fit within an area 500 pixels LONG and 200 pixels HIGH.
Total signature "weight" must be less than 60k.
(Any click-to-grows [dragon eggs, etc] - limit is 3 without any other pics, and 1 with.)
2. Use a free account at Photobucket (or other free image hosting site) or your Arena album, if you have one.
3. Copy the URL (web address) of the chosen picture.
4. Go to "My Account", click "My profile information".
5. In the "My Signature" box:
BBC (MLPArena) code
<img border="0" src="http://mlparena.com/sigs/bannersmall5.jpg"></a>
EZ Board code:
Check out My Little Pony Arena Forums!
If anyone is having issues seeing the pictures in their galleries (or anywhere on this site), and are using McAfee virus protection, check out this link: http://www.mlparena.com/Forums/viewtopic/t=100363/highlight=mcafee.html
McAfee will sometimes block images that are used as links.
[Added by Kiwi - Oct 23/07]