Rowan,

Thanks for the code. I'll work on figuring out how it works (I don't
like to 'copy and paste'. I like to learn something along the way).

Here's an example:

datacol1 datacol2 datacol3 datacol4
row1 A B C C
row2 A C B D
row3 Z B C A
row4 Y C B H

In this example, I want to match on datacol2 and datacol3. Based on
that,
row1 = row3 and row2 = row4. I dissregard datacol1 and datacol4. I
want to keep row1 and row2 in this scenerio.

Thanks.
-Michael.