to search the internet for a program, and there are quite a few, that will convert your existing video into the correct format for the iPod.
"format video for iPod" seems to produce answers. Use Google
I got Apple 30 GB video ipod .But i am not understanding how to import videos into this ipod through iTunes. I dont want to buy iTunes from music store.I want to add Videos from my PC which are in .DAT form or .mpeg form.Please help in this regard.Please explain me clearly as i dont know many things in this computer field.