John, have a look here,
http://www.mcgimpsey.com/excel/udfs/sequentialnums.html


--
Paul B
Always backup your data before trying something new
Please post any response to the newsgroups so others can benefit from it
Feedback on answers is always appreciated!
Using Excel 2002 & 2003


"John McCormack" <John wrote in message
...
Hi all,
Is there any way i can automatically change an invoice number when i open
up
a template of the invoice??