[Click] testing click in a LAN !!

[Claude Hangui]

Hi everyone...
I'm a newbie using click router and I would like to know if it is possible to test one's configuration in a lan ie not connected to the internet.
I noticed that most of the scripts present in the conf file work if you are connected to the internet. I modified 

one of click example to suit my work. I would like to manage qos by setting priority to various services (ie voice, video, data transfer...etc). My problem is before actually testing this config online, I would like to test this in a LAN ie I set my PC as an access point and gateway for my lan so that any request made on the network will pass through my pc on which click router has also been configured. I would like to know if this is possible, and if so how should I actually proceed.
Thx in advance..
Claude Hangui