=AND(LEN(A1)=8,ISNUMBER(--(LEFT(A1,7))),CODE(RIGHT(A1,1))=65,CODE(RIGHT(A1, 1))<=90)


the above will not allow lower case at the end, if you want that the users
to be able to enter both a and A use


=AND(LEN(A1)=8,ISNUMBER(--(LEFT(A1,7))),CODE(UPPER(RIGHT(A1,1)))=65,CODE(UP PER(RIGHT(A1,1)))<=90)

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Regards,


Peo Sjoblom

"dalymjl" wrote in message
...

dan dungan;716380 Wrote:
try placing the following formula in the "formula" section of the data
validation dialog box.

=AND(LEN(A1)=8,NOT(ISNUMBER(VALUE(RIGHT(A1,1)))))

Many thanks for you help. There is still a slight problem as that
validation would permit a letter or other character in the first 7
digits and I only want numbers in the first 7 places.

regards

MJD




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dalymjl