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If you need to bring with you your movie collection, maybe burning a lot of DVDs is not a good idea. If you plan to watch these movies on a computer, maybe you can consider to convert all your movies in avi.
Moreover, storing these avi movies on an external hard disc you can bring with you a lot of movie in a less cumbersome way: a HDD is easier to handle than a box of DVD discs.
To convert your DVDs into avi, you can use the free AutoGK (it already contains all needed software, xvid codec included). Then, to play these movies on your computer you can use the (again free) VLC player.