Problem deploying cas server in production with IIS

[gio_baggio at libero.it]

Hello everyone, 
i'm trying to configure my personalized version of cas server 3.2.1 in a production environement, but i found many problem.
In my server is running Apache Tomcat and IIS with connector ModJK. 
1- My first test is to call http://myservername:8080/cas:  the cas server home page work properly
2- After that i call http://myservername/cas and the result is no answer (the browser continuously try to load page) !

I have many other application on this server and all work fine ... why i can't obtain an aswer from this context is this way ???

Thanks for attenction, everyone can help me?