I went to the help section in PowerPoint and this is what I found:
Can I import PDF content into a PowerPoint presentation?
Yes, it is possible for you to import PDF content from another application into a PowerPoint presentation; however, you will not be able to work with this content as you can with text. When you bring PDF content into your PowerPoint presentation, it acts like an object or an image, rather than text that you can edit.
To obtain the most up-to-date information on how to import PDF content into a PowerPoint presentation, review the PowerTools for PowerPoint PowerUsers - Import PDF content into PowerPoint instructions located on The PowerPoint FAQ Web site.
Can I convert a PDF file into a PowerPoint presentation?
PowerPoint does not directly support converting a PDF file into a PowerPoint presentation. However, you can paste a PDF file from Adobe Acrobat Reader into a PowerPoint slide.
To obtain instructions on how to paste a PDF file into a PowerPoint slide, read the Microsoft Knowledge Base article How to put Adobe Acrobat Reader 4.0 (*.pdf) files on a slide in PowerPoint 2002 and PowerPoint 2003. (You can find the link to this article by typing the above question in blue in the Help feature in PP.)
Hope this helps!