Disable unregistered users from viewing post / But allow SE to index

[markbolyard]

I am trying to figure out if is possible to set the permissions of the forums and threads so visitors must register to view them, but I want the search engines to still be able to index them.

It is not a concern of non members seeing content that is only available to members, but a matter of increasing signups. Is there a way to let vbulletin know it is a SE and allow them to index all content? I hope I am explaining this clearly enough. Any help would be greatly appreciated.