It's no good enqueueing (how do you spell that
) the video files in the LW player...LW player doesn't support video, it only plays music
To add video to iPod, the video will either have to be in mpeg4 or H.264 format. So you'll need a converter.
I'm using Windows XP & I use 3GP_Converter (free). Videora's another free one that's popular. If you're using a Mac, someone recently said that iSquint converter worked well.
There's heaps of info & links to different converters in the thread below.
How to transfer music to my iPod (& iTunes)