how to have excel check for duplicates

[Linda]

I am working with Excel 2003 and trying to set up a data base of emails. I
have 20K entries and need to see if any are duplicates.

Can anyone tell me how? I know programs that are available for purchase but
I managed to do this in the past without having to purchase a program, but I
have forgotten how.
Thank you
Linda

 

[PvdG42]

I am working with Excel 2003 and trying to set up a data base of emails. I
have 20K entries and need to see if any are duplicates.

Can anyone tell me how? I know programs that are available for purchase
but
I managed to do this in the past without having to purchase a program,
but I
have forgotten how.
Thank you
Linda

You should ask in a discussion group for Excel. This is a .NET programming
group
Here's how to find the group you need.

As you appear to be using a web interface, start here:

http://www.microsoft.com/communities/newsgroups/en-us/default.aspx

In the tree on the left, first open the English category, then open Office
and Desktop Applications.
In Office and Desktop Applications, find and open the Excel category.
There, you'll find a group to post in.