Applications :: Possible To Convert PowerPoint To A Vector File?

For years in my department we have been supplied with PowerPoint line drawings to put into our Indesign Executive Summarys etc and have had to redraw them as the quality is poor when copied across. Does anyone know if there is a plugin of some form that can actually convert these line drawings into vector for us so that we don't have to redraw them?I did find a thread that suggested doing 'print to file' from PowerPoint and saving the slides as Post Script files. I have only managed to get this to 'kind of' work with a couple of slides, the coloured boxes come across fine but the text comes across rotated at a 90 degree angel. Still proving time consuming as the text lines come across as separate text boxes too.