I've had this set in my runtime for awhile and finally have a scene I want to use the curtains in.  The default is a kinda blueish shantung and not what I have in mind.  I'd like to use the damask or velvets or silks.  I've tried just selecting the curtains and applying the material from the materials tab, but it doesn't change anything.  I have them parented to a wall section.

I'm using Poser Pro 2010.