hi Check out TushyCash.com
We allow affiliates access to all of our photos in our members area so that they can choose and create custom headers/galleries/promo content. We will even go as far as letting you choose the photos you want in a header and we will have our designers custom make a header or gallery to fit your needs for free.
As long as the photos are only used to promote our sites we have no problem with this. We even have free hosting, and tons of hosted picture, video, and flash galleries.
Hit me up if you have any questions. ICQ: 147940406