greetings, i am a rookie to the forum and to dvd burning (done a lot of cd's though), so i may have a very dumb question. i recently burned a few dvd's on my pc, 3 using Nero 6 and 1 using Ulead MovieFactory 3.5 Disc Creator and none of them can be read on my friends G4 Powerbook. Is this normal and you're all saying 'of course', or have i done something wrong? please help. g.