Blinn??!

As far as I'm aware, the only node in Poser that has a setting for IOR is refract. It sure isn't blinn. Besides, until Snarly can get a material mixer into the exporter, the .xml files are very easy to adjust. Where he showed you to put "float index" you just add any IOR you want. Glass, about 1.4, gemstones - varies, water 1.2-1.3 or so, etc.

http://www.m3corp.com/a/tutorials/refraction.htm

http://vray.info/topics/t0077.asp

Laurie