Hello

I am doing this scene where I created an ocean avi using digital anarchy psunami and after effects.  I imported it into poser 7 and used as a scene where this nessie like creature is coming up out of the water..well when I tried to save it it only saves and imports into Carrara the nessie creature and NOT the avi.  How do I add the background avi in carrara?  Thank you.