Googled all over and haven't been able to find a solution- thanks in
advance for any help!

In Col A I have a list of items that are due for arrival; in Col B I
have the corresponding arrival dates. List must remain unsorted
(sorted would be too easy!)

Col A Col B

Monkey 12/1/07
Cat 1/15/08
Cow 11/21/07
Monkey 11/18/07
Peanut 1/30/08
Monkey 12/24/07
Cow 11/14/07

In Col C I need a formula to drag down that will give the earliest
date available, so for Monkey the date 11/18/07 would fill in for
every instance of Monkey; Cow would get 11/14/07.

Is it possible to set column D with a formula that would give the
next< possible available date? So for Monkey, the answer would be
12/1/07?

Thanks again!