Problem with tutorial Flash5 RayofLight_Revisited

Hi, I am new user of this forum. I would likes to ask help for tutorial above. May someone help me figure out what should I do with Modify/Transform/edit center in Flash5 if I am working in the Flash MX environment? What the main purpose for that function? Appreciate for those kindly help me.
Eh, why I unable see the result for that tutorial? Tq.