Couple places you can download movies...uh hum....to make back-up copies of movies you already own of course...is mininova.com....demonoid.com....those are a couple to get you started.
Heads up...NewEgg.com is a GREAT...BEYOND GREAT online store. They currently have a NEC 16x DVD burner for $44.99 plus $4 shipping. Hell of a buy. I ordered mine on Thursday and got it today! Works great!
That way you won't have to post on here asking how do you break up 1Gb+ movie to fit onto a CD-R.