Just got a 30GB Ipod - I am having trouble adding my movies onto it - I've tried just by going to file then add file just like I've done with my music but nothing happens - am I doing this wrong?

Are the files you're trying to add an iPod compatible format?

files need to be in mp4 format, videroa have a free converter here: http://www.videora.com/en-us/Converter/iPod/

also how do you get videos into 3gp format to work on phones

look here http://www.3gp.com/ for software to convert video to the correct format for your phone