Re: If you want your PMS enabled, please say so here
look in the upper right hand corner where your user name is.
It should be there and have at least one message in it. (I sent a test message)
Then if you want to send someone a pm, type in their user name (or click on their name in a post) and select send a private message. It will open up a box similar to the go advanced screen you get when posting. When you are done typing the message hit send.
If you want to reply to a message do the same thing you would with a post. Click on reply and type what you want to say....