Right click on the file that you wish to associate with InterVideo from
the selection presented to you, select Chose Program, even if InterVideo is
shown. From the next menu select the InterVideo. If it is not shown on this
menu, you can browse disk from here. Make sure you put a checkmark on
"Always use the selected program to open this kind of file".
In addition, the InterVideo may have an option to associate certain types
of extension with it, look in the options for this program.
