So as for the code for the banners the code is pretty easy. First the template. You will use this to put together your very own code using your favorite banner in your own Photobucket. It would be way better if you use your own Photobucket because they only let you have so much bandwith per account.
Template
[URL=http://www.gaiaonline.com/guilds/index.php?guild_id=53015]
[IMG]http://i62.photobucket.com/albums/h94/estadan/guildbanner2.jpg[/IMG][/URL]
So all you need to do is have the banner you like in Photobucket. In Photobucket click the on the banner. It will take you to a page with the banner on it and 4 boxes Share URL, Direct Link, HTML Code,and Img Code. If you were just wanting to post a picture you would put in the Img Code. For our purposes we will use the Direct Link box. If you just click on the the URL in the Direct Link box it should say copied. Paste this in place of the sentence "http://i62.photobucket.com/albums/h94/estadan/guildbanner2.jpg". It should look something like this.
Example
[URL=http://www.gaiaonline.com/guilds/index.php?guild_id=53015]
[IMG]http://i62.photobucket.com/albums/h94/estadan/banner5.gif[/IMG][/URL]
You take this and copy and paste it into your signature. It should take a few minuets for it to update. Come here and post so I can see if it works! Let me know if you have problems. I will help if I can.
sweatdrop xd