or use an actual renderfarm that charges like $.25 per GHz hour. Might be the quickest way to get your animation done.. Other than that faster processor and more Ram (Slakker, almost every render engine is CPU based but most are much quicker than Bryce's)...Beyond that, do what the others said and use simpler mats, less geometry, less transparency/reflectivity etc...Beyond that use a different program :-p (J/k but Bryce and animations are like oil and water...dont mix)