Both Internet Explorer and Firefox worked.
Another easy way with Firefox is
1. Clear Cache
Tools/Options/Privacy/Cache/Clear Cache Now
2. Play YouTube file completely
3. File saved here on your computer (should be largest file, add .flv on end)
C:Documents and Settings"YourLoginName"Local SettingsApplication DataMozillaFirefoxProfiles "YourName"Cache
4. Hidden files must be visible in windows explorer to find Local Settings folder above:
Tools/Folder Options/View/Show hidden files and folders
VideoLan will play almost anything including corrupted files and some partial videos.