How do I create a drop down list in Excel 2003

How do I create a drop down list in Excel 2003. I've tried to use the help
menu and I cannot figure it out.

See:

http://www.contextures.com/xlDataVal01.html
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Regards,

Peo Sjoblom


"Lenny" <Lenny@discussions.microsoft.com> wrote in message
news:8F05DEA1-E264-4760-9DDE-3C97319AA1D4@microsoft.com...
> How do I create a drop down list in Excel 2003. I've tried to use the help
> menu and I cannot figure it out.