Hi,
Here is a collection of examples for adding lines to charts.
http://andypope.info/charts/averageline.htm
http://www.tushar-mehta.com/excel/charts/straight_lines/index.html
http://peltiertech.com/Excel/Charts/DummySeries.html#AddLine
> I have a bunch of Column Charts that Measure data for Production in my
> company. I want to bring these charts to a meeting and show where we are
> against where we should be. How do I add a line to the Chart to signify what
> my target numbers should be?

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Andy Pope, Microsoft MVP - Excel
http://www.andypope.info