Display a New Module Template?
Design and Skin Customization
What Brian is saying here:
brian: You can pass in variables as well - i.e. yoursite.com/whatever/brian
The $_post.option variable would contain "brian" in the whatever.tpl file
is if you have a template in your skin directory named whatever.tpl and you type yoursite.com/whatever/brian into your browser, then the variable {$_post.option} will be set to brian and only available in the whatever.tpl template.
Also, there is no need to check the $_params.module since the jrCore_list is telling the template what module your using. You might want to read over the jrCore_list function docs...
https://www.jamroom.net/the-jamroom-network/documentation/development/89/jrcore-list if you haven't already.
Hope this helps!