Thanks ben and all, this place is a great resorce.

That formula worked on the first cell but when I special pasted that formula into the rest of the colum, the % went above 100%?

Can I post my sheet for somone to take a quick look? I would aprecuate it. I want nice 3D charts too but need to get the formulas right first. Or can e-mail it?

Cheers,

Richard

Btw, How do you upload a sheet?