as, i said, in preview mode, Poser7 let me do what i want with my litlle ATI 2400HD.
a render in preview state is pretty instant !
but..

i want to render in Firefly...

Even with a great video card with best support of shader, lightning direct 3D..Etc, Poser render in firewly will stay at the same speed ? it is very pity (for me).
i don't want to make greater resolution (640x480 movie) is aceptable, just render better and faster.

What is strange , that only 300MB of memory are used (value displayed in task manager in windows xp), wheras i have 2GB of memory, for poser.exe process.
--> Is there a way to setup poser for using MORE of my memory to render faster ? It's a waste to see the quarter of my memory not in use !
Moreover, the HD light (and HD noise) don't look very busy too. My hard drive is not so using too.