Power Point files, be it marked as .PPT, PPTX or with any other compatible extension out there, may be created, edited and viewed using online services.

Warnings These instructions apply to Microsoft PowerPoint 2010. Earlier versions of PowerPoint may operate differently or not allow two iterations of the software to open in separate windows.

Curse you and your ever-changing file formats, Microsoft! Here's how to import 20th-century presentations into PowerPoint 2007.