with the video iPod, what are you using to convert the videos? I just bought one for my gf, highly recommend 3GP converter to convert videos.
Download: http://www.videohelp.com/tools/3GP_Converter
Instructions: http://www.geocities.com/jk2000_at_pa_dot_net/
As for your VRX766VD, most likely you will need to convert whatever files you have to DVD. I don't think burning them as a data DVD will work as the deck (probably) doesn't have the necessary decoders (someone correct me if I'm wrong).Take a look at the following link, also shows how convert AVIs, MPEGs, DIVX, etc files to DVD, and there's a specific guide for Nero Vision about 1/3 down the page...
http://www.videohelp.com/guides?formatconv...search2=Search+