I am pulling data into a LARGE spreadsheet and that data is coming from 4
separate sites. A product might well be found in sites A, C and D. Others
might be found only in A. A sort would obviously group the duplicates, but a
sort is not practical. There are over 45,000 rows of data in the spreadsheet
and finding dupes "by-eye" would drive me to madness.

Is there a way to have Excel "look" down column A and find any item name
(alpha-numeric format) that is repeated. Is there a way to segregate or
highlight the duplicates; or to produce a list of the duplicates? The idea
thing would be if it could copy the duplicating records to a separate
worksheet. I'll take what I can get.... Thanks.