We are using Google CSE - specifying a list of sites that we allow. Now we want to use something similar for Google Images. I know nothing exists directly from Google at the minute, but I was wondering if anybody had come across a PHP script that can do this?

I have found a few that search Google images and display them in your own web page but I am still yet to find a one that only searches our allowed sites.

Anybody think this is possible? Or is it a case of waiting for Google to add features to CSE?