S Parameters - After matching Circuit.

Hi,
I have a BJT amplifier, for which i calculated the S-parameters, After that i had to get a particular Gain & Noise for the same, and then match both the input and output side of it. I did that as well.

Now after doing all that,I have to check the 'New S-parameters' for the complete setup, for that i need to put the complete circuit in a model ( BOX), To do that i go to View-Create/Edit , but when i do it, it shows be no ports are selected.What can i do to get it ?

My questions is
How can i check the new S-parameters of the complete circuit, by putting it into the model and is that the way to calculate the new s-parameters.

thanks for your time.

Rgds,
Student.

if you create the new Project for RF Circuit and S-parameter
before you simulation the Circuit and define the Port for it
and you must cancel port in it , otherwise ,the ADS will show you , it can't find the port in the Circuit.