|OK, so first we're going to assume that when the OP says "my microsoft excel chart" he really means "my Microsoft Excel spreadsheet".|
An Excel Chart is a specific object in Excel, either displayed within a spreadsheet, or as a separate sheet containing just the chart.
That said, let's make sure we're clear on this Row and Column header issue.
True, you can't delete the Row and Column headers, but you don't have to display them.
Assuming Excel 2007 or later:
File...Options...Advanced...Display options for this worksheet...
Uncheck "Show row and column Headers"
Click Here Before Posting Data or VBA Code ---> How To Post Data or Code.