Kerb!
I am just offering you the script you need. It is called Sponsor Gallery Manager! It handles sponsor hosted galleries. Also you can do special traffic trading by when your traders send traffic to you you can split the sponsor codes of the galleries with your webmaster codes or with your special traders codes. Look at my
website for what exactly does SGM and all its amazing features.
http://www.kaktusancorp.com/software/sgm/
Contact me if you need more information!
You can do it here, by the form at my website or
by ICQ: 411661
Thanks!