VBA - Excel chart to Powerpoint linked chart

Hi all
Is it possible to add an excel chart to a PowerPoint presentation as a
linked object using VBA (or via an external VB6 app). I want to achieve
the same result as when you copy (to clipboard) a chart from excel and
'Paste Special.../Paste Link' in PowerPoint. I'm using PowerPoint 97 and
Excel 97.

Thanks in advance
Ben