It is on the top right hand side of the area under the glove box(passengers foot area).  One you remove the small bit of carpet/insulation you will see the wires going into it (these just plug out) Removing one screw should let the resistor fall out of place and be replaced ! Then jusy plug the wires into the new resistor and replace the screw.  Thats it, job done !
                 Smickers
                
 January 2007