Anybody can help me to make this kind of glass?
I tried a lot of different way, but nothing… 
maybe I’m still a rookye with Vray material…
http://www.3wstyle.net/public/files\_upload/utenti/nathan/palco.jpg
picture : http://ice.prohosting.com/gueria/glass\_work.html
And here is the max file (max 6.0) :
http://ice.prohosting.com/gueria/vraytest/glass\_work.zip (left click)
The effect you are looking for is achived by using glossiness (<1.0) in the refraction.
Play with the nbr of refraction subdivs, and the reflection interpolation settings (material editor), to get better or faster rendering.
Disable the caustics also, if you find the redering too slow.
Thanx for your help, I’ll try it and tell you what’s happen 