Attached Link: http://www.renderosity.com/viewed.ez?galleryid=306070&Start=1&Artist=Firebirdz&ByArtist=Yes

I got that problem too in Poser 5 and it was even more patchier. However, I realised that all the short hair textures were in the same texture folder. I took them all out and hid them save the texture colour I wanted which I renamed to the orginal name. It worked great after that. Not sure if that works for you but it did for me. The attached link is an image I did after I did the changes. Not sure if I am doing this the unconventional way. LOL.