First of all, thanks to all of you for your assistance!
Believe it or not, I dug up one of those coffee cans in the backyard (frozen ground and all) and bought (gasp!) the latest, Windows 7 compatible, version of Pinnacle's Studio video editor (one I understand how to use). My old version wouldn't run right on W 7.
On converting video .AVI files, the Hamster program works great! It was the only one that worked, so it's my main weapon from now on (assuming I still need it with the Studio program).
Again, thanks to all. We have a great resource here!
Jeff