You can try http://www.dvdflick.net/download.php but you didn't tell enough about those files.
I have a Panasonic GS320 that takes terrific movies and I have no problem downloading and editing, but it seems impossible to burn them to a DVD. I did the download through USB. I got the impression from another post that using Firewire instead would solve the problem. Is that true and if so why? Different file type? I'm beginning to think making DVd isn't possible because the 2 editing programs that come with the camera don't seem to even have the option of burning to DVD. I can't believe that's so.