This script will store your nickname on a your birth date, then when it's your birthday it will echo it out onto the channel along with anyone elses birthday on the same day.

Usage: !addbday [nickname] [day] [month] [year] (eg. !addbday nick 03 05 1985
Sample Output: [Birthday] Adding Birthday for nick on Day 03 Month 05 and Year 1985

Also included is a How Old script, This works like so:
!howold [day] [month] [year] (eg. !howold 03 05 1985)
Sample Output: [Age] You are 25 years old, Born 1320wks 1day ago.