I dont know if we were able to at The Dom Project or not, but you are able to add events to the Calendar (located in the top right hand corner) here. As long as it has some appeal to the members (So no "Mums Birthday" or anything like that :P ) your free to post dates up, Four days before the date the board will post a short line indicating that its four days to go. There is no need to add your Birthdays, as you are able to do that in your control pannel.
Okay, that's cool :)
Sarah