Thanks for the info, now I understand...So am I right in thinking that an xvid takes up more space because the quality is alot better ie. part 1 to a movie is 700mb and the same for part 2 and you download them seperatley....So would you be able to fit the 2 of them onto 1 dvd ? (I've always put them on seperate ones) and the quality is great....

There is so much to this lol....
Not long ago I wanted to shrink a 1GB file so it could fit onto dvd and was told I didn't have to because it was a 4.7GB disk, this is how i have got it all confused as what can fit and what wont...

Thanks so much for taking the time to clear some of this up for me...