I select a heavier line weight for a Pivotchart graph so it is easier to see,
however every time i change something on the graph from the drop down box the
line weight goes back to it default (lighter) weight.

Loss of formatting is a known problem with pivot charts. There's
information in the following MSKB article, suggests recording a macro as
you apply the formatting:

XL2000: Changing a PivotChart Removes Series Formatting
http://support.microsoft.com/?id=215904


NPG wrote:
I select a heavier line weight for a Pivotchart graph so it is easier to see,
however every time i change something on the graph from the drop down box the
line weight goes back to it default (lighter) weight.


--
Debra Dalgleish
Excel FAQ, Tips & Book List
http://www.contextures.com/tiptech.html