Another AHA moment for me. That clarifies this line:
I have read the tutorials to program FMC but when I try to vreate a flight plan from KLAX to KLAS, the route I get is different from the one given in the tutorial.
in you original post. But then the one you included images of in your email to me were KLAX to KSFO (which is the route I am using in the tutorial).
;D