[Catalyst] adding my_app_name to action paths

[Mike Glen]

I'm trying to setup a catyst app to run behind nginx so that the app is 
accessed at http://my.server.com/my_app_name/
I have set this up following instructions at 
http://dev.catalyst.perl.org/wiki/adventcalendararticles/2008/02-catalyst_and_nginx
I can get the requests passed through to catalyst running the 
http::prefork engine but I haven't found a simple way to add my_app_name 
to the beginning of each action's path.

Is there a simple way to do this?

I'd like to be able to do this in the config file if possible

Thanks