Bill,
The video files from Google have a file extension of *.gvi. They are
really nothing more than a standard avi file but,,, Google puts a goofy
file header containing the wrong FourCC codec information in them
specifically so they won't work properly with a Windows Media player.
(Guess they want you to use their player.)
There are a number of freeware apps on the net to change the codec
information and search should turn up lots of them for you.
Austin Myers
MS PowerPoint MVP Team
Provider of PFCMedia, PFCPro, PFCExpress
http://www.pfcmedia.com