It's no problem! There are several ways to PM someone. The first is to click their name in a thread and select "Private Message" from the drop down menu. The second is to go to their profile and click "Send Private Message" from the menu under their user name. And the last way to PM someone is to click on "Settings" at the top of your screen and click "Send New Message" found on the left hand side of your screen. Then you need to type in the username of the person you are trying to contact, write your message and send it! 