You would could use VLOOUP the check the do not call list
and place an "X" if found there. Then you can use AutoFilter
to filter out "X" rows.

VLOOKUP
http://www.mvps.org/dmcritchie/excel/vlookup.htm

AutoFilter basics (Data, Autofilter) at contextures.com
http://www.contextures.com/xlautofilter01.html

If this is the National Do Not Call List, it will not scale very well
with Excel, you would need a database.
---
HTH,
David McRitchie, Microsoft MVP - Excel [site changed Nov. 2001]
My Excel Pages: http://www.mvps.org/dmcritchie/excel/excel.htm
Search Page: http://www.mvps.org/dmcritchie/excel/search.htm

"Moni39" wrote in message ...
I have a list of phone numbers from the do not cal list and a number from
another list. I want to compare the two lists and look for dupes to I know
who I can call. I would like the duplicates from the two lists to be
identified and the other numbers not on the do not call list to be accessable
in order to call.