Hello Term Team, Welcome to the Act! Community. For ACT! 2010, you would need to set up a recurring activity for each birthday, using a reminder (alarm) for each. In ACT! 2011 and later, a new feature was added called Smart Tasks that can automate this for you.
Note: Effective 6/1/13, Sage no longers provides support for the Act! software. This is now provided by Swiftpage.