Thanks so much for the reply!
By validation dropdown, are you talking about just supplying a list of
dates? If so, I don't think my client would be too happy with that, as
the range of possible dates for each field is very large, and as a
result, the dropdown would be huge. However, if it's between that and
nothing, I should probably keep the idea on my list!
As far as your picture, that's exactly the type of thing I'm looking
for. Would it work in Excel 2004 on the Mac? I've found several similar
date pickers, but none are supported in Excel 2004 on the Mac.