Hi again,

Am Tue, 18 Dec 2012 15:34:01 +0100 schrieb Claus Busch:

you can also choose Data = Data Validation = Custom and enter the
formula (for cell A1):
=WEEKDAY(A1)=7 for cell A1

the cell can be custom formatted
[<8]General;dd/mm/yyyy
So you can enter 7 or any date for Saturday


Regards
Claus Busch
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Win XP PRof SP2 / Vista Ultimate SP2
Office 2003 SP2 /2007 Ultimate SP2