i have the same as you shaun.. i have the 757 and 767 and don't fly with it, because i dont know how too :P
just a bit to difficult for a hobby flyer like me.

However i also own the 707 and 727 and they can be flown without too much hassle and from there you can make it as realistic as you want too.

with a little help from the forum members i was able to integrate the default FSX nav system and gps and can do some flying that way.
I combined the CS aircrafts with the addon FS Passengers X to give it some more indept... like turning on the correct lights, not forgetting flaps at takeoff and landing or get a penalty, landing your plane to hard on the runway and destroying your tires :). the key in FSP is managing your passengers during the flight, entertain them with a movie, some music, give m food and drinks etc.