I don't know what it is called
 

I would like to find a mod, but I don't know what it is called. So, it's difficult to look up, when you don't know what to call it.:o

I will try to explain what I want. I need a mod that allows unregistered users to see thread titles, but not the posts until they register.

Can anyone point me in the right direction?? Please!!:)

this is built into Vbulletin already.
you just use the USERGROUP settings allowing each usergroup specific access to each thread forum etc

I don't think you can manipulate usergroups to allow them to see thread titles but not the posts.?

Slightly different, but I use Limited Guest Viewing -- Motivate Guests to Register

yes you go to usergroups> forum permissions > select the forum and the usergroup and
change the setting in Can View Thread Content to no.

this disables that user group from viewing the content of the thread they can still see the thread titles but not the content..