I'm using Bryce to make morphing mountains for poser, but when I add a morph to an exported mountain in poser everything including the overall size changes, my silly question is and shoot me if it's in the manual but how do get the shape change without the size change?

I'm guessing here. But What I figure happened is that when you brought the terrain into Poser you had the percentage of poser figure checked. This shrunk the model down but the obj you are applying as a morph has not been shrank. My advice is shrink them both in bryce. You'll problly have to shrink it a lot as the Poser world is small. Then when you bring you terrain back in don't check center or percentage or anything actually. Even if its still a little big wait till after you have applied the morph to scale it. I hope this helps.

thanks for the advice I'll give it a try tonight when I get home from work