All the above is very sound advice. I'd like to add that you're about to start a considerable amount of work so give a little additional thought to how you can cut some corners, for instance: many shots can be reused with different camera angles, lighting etc.; don't burden yourself with huge amounts of animation - I often wonder when people talk in terms of animations in excess of 999 frames, make a note of the length of time scenes last, 8 to 10 seconds 15 tops and many are much less; of course, you'll end up saving loads of scenes so keep track of them with an ordered, sensible sequence; I can think of more but they're specific to Flash and Shockwave.....