retrieve data from static xml

I have a static xml file..lets say employees.xml (which has id and name)...I am able to pass an id from url but would like to add a xml pipeline to retrieve the contents from employees.xml for the passed id from url and display it in the xhtml view that is defined.
Can somebody give general outline on how should i proceed.
I am new to this area and am doing some poc for my project.
Somebody Please help.