Hi,

Yes you can change the shape. To do so you need to use a custom marker.
Create a shape using the autoshapes menu. Format the shape in terms of
colour and border. Copy the shape using CTRL+C. Select the data series
in the bubble chart you want to change. CTRL+V to paste the shape.

Here is an explanation using pie charts as the custom marker but you
should get the idea.
http://www.andypope.info/charts/piedatamarkers.htm

Cheers
Andy

soroosj@swbell.net wrote:
> Does anyone know if the bubble chart default shape of circle can be
> modified to other shapes (i.e. triangle, square)?
>
> The flexibility to present different shapes could be useful when
> presenting two series on the same chart. For example, one series could
> be the default circle, another a triangle.
>
> I have seen this capability in other applications with advanced
> charting capabilities.
>
> I am using Excel 2003.
>
> Regards,
> Joel
>

--

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