I am trying to help out our marketing department and so far the only thing I
have accomplished is to turn myself into a drooling idiot.

My problem: We have two worksheets, the first is a list of names/emails of
prospects and the second is a list of names/emails of people who have
actually bought our product. Marketing wants to send an email to the people
on the prospects list that are NOT already buyers.

How can I compare the two lists, removing the names that are buyers but
otherwise leaving the prospect list intact?

I am using Office 2003.

Thanks for the help