This should make it's way into RC3. For those who need it sooner though, here's the instructions.
/forum/includes/init.php - Look for:
Code:
Content visible to verified customers only.
Replace with:
Code:
Content visible to verified customers only.
/forum/includes/adminfunctions_gallery.php Look for:
Code:
Content visible to verified customers only.
Below this, Add:
Code:
Content visible to verified customers only.
/gallery/showimage.php - Look for:
Code:
Content visible to verified customers only.
Replace with:
Code:
Content visible to verified customers only.
You will then need to edit each of your usergroups and set the permissions accordingly (they will be off by default after making these changes).