Try importing the completed PhotoStory
..wmv files into Movie Maker...drag them
to the timeline and save as a single .wmv.
To save as a .wmv movie file...
Type...Ctrl+P to open the Save Movie Wizard /
Choose...My Computer /
Next /
Enter a Name and a Save Location /
Next /
Tick...'Best Quality For My Computer'
Next/
Wait while the movie is saved /
Finish...