in Poser 4  or   Poser 5, is there any way to render a shadow on an "invisible" ground?  

(for example) I want to render a horse running, using an AVI background I rendered in Bryce( rather than export the horse into Bryce)    Unfortunatly, when I do this it looks bad because there is no shadow under the horse...I don't want the Poser ground plane to show, just the shadow.

Thanx in advance

Not in Poser 4 but there's a real simple shader technique to work in Poser 5.  Poser 6 has it built in, so probably Poser 7 does, too.

Gimme 5 minutes and I'll dig out the shader you need to do it.

Thanx...would be appreciated!!

You can put a primitive cube under everything, and that can work ok (just did it with my last pic). You can texture it with whatever materials are in Poser.

Thanx !!   Had to go to bed, just got home from work and tried this....I never would've figured that one out myself--been trying for days! 
    This will come in EXTREMELY helpful    thanx again!

You're very welcome!

IMyself and another Poser user - who's name escapes me momentarily - developed an extension of this which allows you to throw reflections onto an invisible surface.

I'll post that one asap.