Problem "J2EE Web Profile support"

[Vogliotti Massimo]

Hi, i use NetBeans 7.0.1 with tomcat 7.0.25 integrated.
I'm creating a web application with JSF 2.1 and Java EE 6, 
when I try to create a "JSF Pages from entity classes" 
I get the following error message:
    "JSF Pages for Java EE generated sources can not complete without
servers with J2EE Web Profile support.". 
What can I do?
thanks
Max