This problem is a little difficult to explain in words, so please
excuse me if this doesn't make sense as is.

I have a large data table with a header row and data something like
this:

Item Event Group Date1
Date2 Days
....
43445 22123 10356 12-Dec-07
....
43448 10356 18-
Dec-07
....

The table is sorted on the "Item" column which contains distinct
values. Each row will have an "Event" value, unless (like this
example) it has a "Group" value, in which case only one of the grouped
Items will have an Event value. The row with the Event value will
always have a Date1 value. The Date2 value is always present, but
with Group-ed Items, it will not always appear on the same row as the
Date1 value.

What I need to do is put a formula in the "Days" column that subtracts
"Date1" from "Date2". For ungrouped Items, there's no problem. But
for grouped Items, I need to return Date1 from the only other row in
the table with a matching "Group" number.

Is this possible without VBA? I'd sure appreciate your ideas on this!

Thanks,
Terry