Do you HAVE TO use Fire Fly renderer for the dynamic hair to show?? I've just started experimenting with the Hair Room but this thread has me worried. I rendered my first effort with the Poser 4 renderer this morning but only the guide hairs show. Fire fly takes hours on my low-low-end PII 400MHZ with 386 MB of RAM. I rendered one frame with Fire Fly last night, left it overnight but forgot to check "show populated" so I got the same results I got this morning with the P4 renderer--only guide hairs.