WMP can only play some v1 and v2 files, no QTVR, 
no v3 or v4 codecs.

Since this confuses people, WMP no longer lists 
MOV as a supported format.

WMP can still play back this limited subset of files, though.
Just drag and drop the QT file onto WMP.  If it works...
it's always worked. If not... use the QuickTime Player.