Images from Web Report in Powerpoint

I have a requirement to link charts that are displayed in a web report into a powerpoint presentation.

The powerpoint presentation is presented every month, and so the users wish to be able to embed a chart (which is generated from a BW Web report), and then have this update each month with the current data. They don't wish to have to cut and paste the new chart in each month, as there are a large number of charts that would need to be done each month.

Does anyone know a simple method of doing this?

Thanks in advance for any assistance

Regards

Richard