I believe MS Outlook is expecting a "named range".

See Debra Dalgleish's instructions on how to create one:
http://www.contextures.com/xlNames01.html

Does that help?
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Regards,
Ron

XL2002, WinXP


"Ron" wrote:

I am trying to use an Excell database of names to be used in Outlook and it
asks for defining of ranges . Its a one column. I dont understand. Please
help