Hi Sandog,

I've tried to explain this as best I can but I'm sure it's unintelligible
without looking at the actual file.

Agree. I, at least, can't understand the problem.

This is probably an Excel Charts problem, not platform specific, but for
what it's worth I'm using Excel for Mac in Office Mac 2004.

Sounds more like a data layout problem i.e. you need to set up the data in a
way that Excel can understand.

Suggest you look at the samples here (particularly the 'Reporting' sample)
http://edferrero.com/ExcelCharts/tabid/102/Default.aspx
to see if they help you understand what is going on.

You might also check out Jon Peltier's excellent pages on combination charts
http://peltiertech.com/Excel/Charts/ComboCharts.html

Ed Ferrero
www.edferrero.com