I wanted to do this myself so here is how I coded it... Note I hard coded the actual domain and forum path so you will need to confirm the actual URL for your site!
Open PROFILE.PHP in your photopost templates... If you are using an integrated Photopost make sure you are editing the correct one...! Before making the change, back the original file up!
In the file find:
Code:
Content visible to verified customers only.
After Add:
Code:
Content visible to verified customers only.
NOTE - You need to adjust your YOURDOMAIN.com/forums/ as necessary...