I have my list of Criteria in Column A - (In this case the Criteria are names)
In column B, C, D, and so on are days of the month.

I paste the raw data underneath the spreadsheet in the coresponding columns.
So, day 1 is under column B. Day 2 under column C and so on.

I have formulas setup in the spreadsheet to count every time it sees the
name in the data for each day. Those formulas work great, so I dont want to
change them.

Here is a small example of the layout.
A B C D E
Day 1 Day 2 Day 3 Day 4
John 1 0 1 1
Mark 2 0 0 0
Steve 0 3 1 0
Dan 0 0 1 1

John Steve John John <--This data is pasted
from a text file
Mark Steve Dan Dan
Mark Steve Steve Jason

Notice that in column E, the name Jason is in the data, but not anywhere in
column A. So there are 3 names in the data list, but only 2 are counted. So I
would then have to insert a new row for Jason.

What I would like to do is to somehow compare the names after I paste the
data in, and if there is a name that is not in column A, then it would point
that out - maybe changing the text color to red, or returning a value into
another cell.

Thank you in advance for any ideas.