cas integration question

[Greg Rank]

I have assembled and installed a suite of 6 web applications that I'd  
like SSO for.

Three web apps are java and three web apps are php.

I've come across cas and here is what I have done so far:

I have downloaded your server sample and got it working on Tomcat. I  
see a login page and can login.

I have read the docs on editing a web.xml for CAS in a java  
application. It looks very simple

I have read the instruction for  and downloaded the php files, it  
looks fairly straight forward to me.

So my question is, how do I configure the 6 application URL's in the  
server component (running on Tomcat) so I can click on a link and get  
logged into each application? Is there a config file where I populate  
the URL's to the cas login pages inside the server war or is this  
done at the client level or both?


In other words, how does the server need to be configured to  
communicate with the client  or vice versa(I use client here to refer  
to one of my six applications mentioned above)
?
Also each php and java app has it's own authentication mechanism,  
i.e. currently a seperate
username and password are required for each

Thanks

Greg Rank