Spark Mvc Helper Methods (Pagination & Cart)

Hi There,

Version : 
Design Pattern Framework CS 4.5 version.  

Problem : 
Currently I am in the process of hand coding my own solution and I would like to use the admin portion of spark. After copying across the relevant files and updating the Namespace an exception is thrown (missing a using reference.) when I try to  access the Users portion of the admin area. I am able to rectify this by adding a @using [Name].Web to the _users partial view. I would like to know how the reference is done in spark, because I notice that no using reference is require.