Is there a way to convert a printdocument to a bitmap?

I have a print document that prints 15 individual pages to the printer.  I would like to use the same code to print the document to bitmaps.  My ultimate goal is to create a powerpoint presentation using the individual pages as pictures.  I already know how to automate powerpoint but need some direction for creating bitmaps of the pages.  I do know how to create bitmaps with code, but am looking for the best method of using the code to send the pages to the printer or create a powerpoint presentation. Right now, I create the document and then use Pd.print (Dim pd As New PrintDocument) to send the document to the printer.  Is there some way to send the PD.print to bitmaps instead?