Automatic Welcome Notes to "Status"/Activity Feed" (Must be finished in 1 week)

Firstly, you have to sign up to our social network to understand my gig. ([login to view URL]) . I wish to have a plugin where a new member will be greeted (on his first entrance) with automatic welcome notes and chime or music with his or her name (personalized) is posted with the greetings in the Status block. The form can be customized and html is possible in case I want to put banner or something. Freelancer who will create this will try it first to his Phpfox site before he will install that to our site.