Hi Colin,

Am Thu, 28 Nov 2013 18:26:45 +0100 schrieb Claus Busch:

=REPT(0,13-LEN(A2))&A2

or try:
=TEXT(A2;"0000000000000")
Copy the column with the formulas and paste it back as values


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