Hello folk,

I am using VoxAtc  with PMDG 737NGX. I have the same navdata cycle for both programs.

I am wondering which is the correct way to handle in the FMC the  star and relative rwy when you program your FMC.

Lets explain what I mean:

For the flight planning I use FSC with routefinder, so I have the sid and star points included in my plan.

I can easy guess the runway for departure from the ATIS of voxatc and relative sid from my initial waypoint, but I cannot know what will be my approcching rwy I only know my star. So when I program my fmc I put my star and one casual  rwy relative of my star.

Often happen that the voxatc fill me in a different rwy for the approach so I change on fly my FMC.

My procedure is correct?

I'm still learning, but what I have been doing is not including my sids/stars in my flight plan. Since I have purchased a navdata set after I cross my last waypoint I get a call from ATC telling my to fly a specific approach. They don't give me the runway I am landing at that time. Once ATC tells me the approach I just go into the FMC arrivals page and select the approach and transition they told me. ATC will later tell me the runway and pull me off the star to line me up for a final. I just learned today how to get ATIS for my arrival airport, so that I am hoping to be able to determine which runway ATC will tell me to land at as early as possible. I sometimes wish that ATC would just let me fly the full approach laid out by FMC, so that I don't feel the need to scramble at the last minute to prepare. I know I can request a full ILS landing and do it that way, but its just not the same. Hope this helps. 

Rereading your post I noticed I used to do the same thing. You can set your FMC to fly an approach without selecting a specific runway.