Can MS Word open from a Memory Stream?

I am writing a WPF Desktop application that creates MS word files using the Open XML SDK.  I want to create the document in a memory stream, and then have MS Word open the document from the memory stream (in contrast to saving it to a location on the hard drive and then opening).

Is this even possible?  I primarily want to do this so my application doesn't leave tons of word documents on the users computer.

jhoop