>Given a birth day, say 11/02/56 or 11/02/1956, whats the best way to determine the current
>age of this person?

(DATE() - ldBirthday) / 365.24 should get you pretty close.

Failing that, you could do a loop with GOMONTH(ldBirthday, 12*i) until you get a date greater than the current one.