Require post to view threads

[James Birkett]

Hello,
I have a 'Photo Booth' forum which is for my members to post pictures of themselves etc. However, my members have suggested (and I agree) that in order to view the content of the threads in this forum, they must first post a picture of themselves in the forum.

So I basically need a modification that allows you to post a thread, then when the thread is posted it gives you access to the threads & content.

I know this could be done with a usergroup promotion, however I am hoping a plug-in/modification exists to do this already.

Thanks in advance.