yes...
1. set new uses to sign up as 'User' ( default group )
2. set the 'User' group to always be 'moderated' for any posts in all applicable forums
3. create a new group 'Valid Peeps' ( put whatever you want for that name, but you get the drift.
4. set that group to be joined with a certain post count ( ie: if they've made it x posts, they join that group )
5. set 'Valid Peeps' permissions to allow un moderated posting.
