Guys and Gals

Just wondering if anyone has worked out how to change the video thumnails in my videos in the video app. It appears that when you link your movie files it takes the first screenshot from the avi and uses this as a icon for the movie file.
I have tried adding a jpeg to the movie folder but the video app just ingnores this.

It has been previously suggested that you have to edit the movie file and imbed a image at the start of the file, but to be honest with hundreds of movie files i am not about to do that just to make it look good.

There must be a way of associating a jpeg with the file you would think.

An ideas???