Problem - little tiny flash videos instead of regular-sized movies

Here is my problem. I created an HTML page with tables. In 3 cells, I placed 3 flash files(CS3). 1 was a banner, 1 was a large main movie, and 1 was a menu.

It viewed perfectly in Windows XP on my Opera browser at home. I burned the folder to a cd, and it viewed fine from there as well. I took the cd to my client to show him my current progress.

He had Windows Vista with IE. The HTML pages loaded up fine, but the 3 flash movies, which were originally 3 different sized, were now only 1-inch square thumbnails. The flash files were intact, and were running, but not at full screen.

Is there a setting in Vista or IE that would cause the swfs to be reduced to 1-inch thumbnails?