quick "the Date" question

[GenocideOwl]

M = Month(TheDate)
    D = Day(TheDate)
    Y = Year(TheDate)

ok, when the user doesn't unput the date I have these run
well my question is on the "year" command, will that be the full "2006" or just "06" and if it is the full 2006 then should I just use the "y=y-2000" or is there a way to make it only give the last two?