Plug in your ipod
go to Start,
With your drives, you should see your ipod's, if not, plug your ipod in again.
There should be a list of folders, click the one with the letters (ex. DFCA[i forgot the actual letters])
click the apple folder (it should be the only one there)
then there should be a list of your videos
one file, being the actual video, and one being the data file (.data, or something)
you drag the video file to your videos folder (you might have to open another Computer/Documents window so you can drag it correctly) and there will be a copy left on your ipod as well.