Quote Originally Posted by StephenT View Post
I don't understand if you have to do anything for WP to ping or not. Do you have to enter anything in the trackback area or does WP just do it?
This was referring to "blog and ping" which is different than trackbacks. In your WordPress admin panel, look under Settings > Writing Settings. At the bottom of that page is "Update Services". See this link for more:

http://codex.wordpress.org/Update_Services