As Pons said, posts in certain areas don't register to increase your post count. But membership (including PM privileges) isn't automatic after a certain number of posts. If there's someone you need to contact, you can ask a Moderator or Administrator to forward a message for you--we're happy to help.
Here's the relevant bit from one of Verla's posts here in the FAQ section to give you a fuller explanation: (http://www.verlakay.com/boards/index.php?topic=25618.0
My post count never changes. Why?
The posts that "count" are the ones that allow your personality to show through and that are considered "contributing" posts. These are posts that add to the informational value of the board through thoughtful questions and/or answers. This doesn't mean we want to discourage other posts... it's just that there are so many people on the board, and every person has to be personally "evaluated" by one of the administrators. Using this criteria as a basis for the number of posts that "count" makes the administrators jobs much easier when they are doing their regular evaluation checks on the members of this board.
9) Why canít I PM (send anyone a private message)?
The "No PM" policy for newer members has been in effect for several years now, ever since we had a terrible rash of absolutely horrible pornographic spam on and through the board. Someone signed onto our board, got into everyone's profiles and a vast majority of the people on the board started receiving extremely disgusting XXX-rated pornographic photos via email. (Some were posted on the board, too.)
In order to avoid that problem from occurring again, we changed the board features so that only the people who have been here for a long time and have shown themselves responsible through many caring, sharing posts could get into other member's profiles, which automatically meant they were the only ones who could send PM's to other members on the board, too. Since that policy went into effect, we have had no more problems with "drive-by spammers" having access to this board's members' profiles and sending pornographic photos and/or massive spam mailings to any of you.
If someone sends a PM to you and you want to reply, do it in an open message on the board. Be sure to tell the person you want to respond to the PM they sent you, but you don't have that privilege yet and ask them to send another PM giving you their email in it so you can reply to them. (And folks, if you are sending a private message to someone who isn't yet a full member be sure to include your email so they don't get frustrated!)