ok, i suggest you use DVD-R's in the future. they will work on more machines.
secondly, are you burning grey's? i usually split the episodes on 2 DVD's, so my gf can have better quality.
ie, disc 1 has 6 episodes. i will burn 3 on one disc and three on another. however, if you do this, make sure you select the right episodes in order.
the menu will be on both, but it will only let you play the ones you put on there.
select each individual episode like you were selecting a movie. it's the same principle.
donate a chunk of karma my way.