Can someone please expand the explanation for the previous thread below?

http://www.excelforum.com/excel-gene...ific-list.html

I am trying to do basically the same thing, I have a long list of clients and need to separate them by date they contacted us. I am using Excel 2008 on a mac, which does not allow micros. the previous thread does exactly what i need to do, but i cant get it to work.

Thank you!