looking for: Simple Chart Widget for 9.3

Since I don't have 10 AGS I cannot publish services a feature services, so it is my understanding that the default OTS chart widget requires a feature service.

Anyone out there have a simple widget using the 3.0 api/flex viewer that works with 9.3 map services?

I would like to build a bar chart widget to display monthly energy usage data by building.

Thanks.

-Will