Fur problem

[aligrafix]

I m having problem using hair and fur modifier in max 9 32 bit. I have a big scene for architectural animation and i want to use grass on it. A simple spline created the lawn boundary and then i applied extrude on it. When i apply hair and fur to a small box, its just ok but when i apply the same modifier (copy/paste) then systems hangsup when rendering it. There is no kink,frizz or multi-strand parameters and total hairs = 15000.

I have Core2Quad Q6600, 2G Ram.

Secondly i used vray fur but it renders on small parts but takes too long to render on a lawn. If i use displacement, it takes enough time to render. Thats y i tried to use max hair&fur modifier.

I m using vray 1.5 render engine with it.

Thanks for help