If you've got 2 digit years you want to convert to 4 digits, you could use
=YEAR("1/1/"&A1)
If you've actually got 4 digit years or real dates that Excel understands,
then they should sort OK.

If this is intended to be a follow-up to another thread, we don't know
because you've started a new thread.
--
David Biddulph

"RealGomer" wrote in message
...
I'd also like to be able to sort on the basis of the 4 digit year. I an
incorrect reuslt where years from both centuries exist, such as an
ascending
sort having 2006 come before 1999 instead of the correct 1999 before 2006.
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I know enuff to be dangerous.