Ron,
This is great, I don't need it right now but I'm sure that it'll come in
hady one day.
I narrowed the Range down from A1:A20 to B7:B8 and called them "Start Date"
& "End date" in A7 & A8 respectivly.
In C8 I've put a validation to trap End date being BEFORE Start date......
=IF(B8<B7,"END Date can't be Before START Date", " ")
That works nicely as well if anyone else needs it.
Thanks again Ron
Best Wishes
John