tebop, if yer computer is crash-prone, then ask in mac forum how to fix it or trouble-shoot it.  these animation experts may be better able to help ya if ya post 6 rough animatics of yer movie, each one about 1 - 2 min. so far I ain't seen ya post any animations, but it don't matter how bad they look - they might inspire others to participate somehow.  it sounds like ya need a large staff for the voice-work, for doing renders, checkers and that.