time date

["jose Bartolomei" <surfprjab@hotmail.com>]

Dear S-plus users,

I have two questions.

1.  How can I format a numeric vector (like: 01012000) to timeDate (like: 
01/01/2000)?
2. if the time is the Birth Date. How can I calculate the age?
for example; from 01/01/2000  to  4.x year of age

Thanks in advance.
Jose
Research Student
LSHTM