new post popup remote!

what im looking for is.

a small popup window wich contains the 5 or 10 (preferable defined) new posts on the board.

saying for an example.

hey i just got this msg posted (5 replys)
well didnt i just buy me a cool car (4 replys)
last post i will ever make (10 replys)

and so on.. say 3 as a predefined number in my example.

and when you press the link it opens a new window taking you to the top post and when you have read it it goes away from the little popup window next time it refreshes.
(but not untill i have read them)

say it autorefreshes once every 5 min or so.

please let me know.
sincerly Anders Johansson