"Poser 5 SR3 is choking on P4 (3GHz HT 800MHz FSB) with 2GB DDR 400 (dual channel), XP Pro."

Works like a charm on my 2.8, you might want to look into other causes.

"the reason dynamic hair can`t be used like a normal object is because Poser 5 exports just the vertices and not the facets or polygons."

The is extremely common in high end hair renders plug ins. Generally speaking the hair is handled as an effect based on hair splines (in poser it is a vert chain). Hell, in Maya even today the hair and fur cannot be rendered in mental Ray - a rendering engine included with the packadge.

Hair is not your "normal" set of polygons in most applications... poser included.

That being said.... BodyStudio imports them into Maya and Max :)