Looks to me that you might have loaded up the window blinds several times. I'm not very Poser savvy at all, but it could be that the render engine is getting confused with co-located polygons. :o) Just an observation. Cheers! M P.S. Yes... I suck big time at texturing stuff for Poser. :o(

Mind Over Matter
"If you don't mind, then it don't matter."