Usergroup Question
 

Hey guys, just a quick quest.

I have 2 usergroups:

Visitor
and
Member


When you first register, no matter what your statistics, if you have between 1 and 5 posts, you are in the Visitor Usergroup. Once you hit that 6th post, it moves you to the Member group. Any idea on how to do this? I was looking at promotions, but I couldn't get it working. Any help is greatly appreciated.