This is all I found and it doesn't really tell me much.
"To order custom banners, send the order via PM to the ID "Banners". Include name/description and the name you want printed in the scroll, with city/state. You may not recieve a notice immediatly. I do them in batches and it takes a few weeks. "
Sorry to be a pain to all, but I don't know how to send a PM to the ID "banners". Now watch, I will probably figure it out within 5 minutes of posting this message!