Using the Walk Through or Fly By feature in itself is not going to do it. There is no way to change the phase through a single Walk Through or Fly By path. Waht you can do is create a series of Walk Through or Fly By avi's and splice them together or go to another program (i.e. Adobe Premier) to post video the avi's.
Mel Persin, AIA
Journey's at Dusk are enlightened by Dawn (author - myself)