I hope this is still programming related, as SuperUser doesn\'t seem the appropriate place.
Basically I wonder if it is possible to have Applications that are intern
I don't think so i think the best bet is to develop a web application and develop a custom skin so that it can be viewed properly in the iphone web browser safari, they could then add a shortcut to the webapp to their home screen add a fancy icon to it and then it would look like a iPhone app.
There's the Iphone enterprise deployment program. It seems to cover exactly the scenario you are describing, although I am not sure about the admission criteria you have fulfill.
You have 2 types of subscription for the iPhone developer:
The second program is exactly for you.