I need help implementing grid

Hi all,
I need some help, because I can't implement an example of grid with checkbox in codeigniter. The example is next: http://www.trirand.com/blog/jqgrid/jqgrid.html,
I can't show an even empty grid, somebody could explain to me step to step how do it?
I Attached the view, I appreciate any help.
Thanks a lot.


Fernando