Hi Bolder-dash
This has gotten a bit complicated and I just want you guys to be on the same page, so maybe this works, or maybe not, I'm willing to give it a go.
I am not an evo, but hopefully this definition sits alright with them (note, I am not trying to give a biology lesson, I am just trying to show some common ground).
As such NS doesn't have any effect on evolutionary change (well, depends on what you mean by evolutionary change). If you mean "change" in organisms then this "change" occurs through mutations. If you mean "change" in ecosystems, then these changes are because of NS acting on organisms. So NS does not change a particular organism, but mutations do. NS selects whole genomes, It works with what is already there, it doesn't add anything new, it may "highlight" a feature of a group of organisms or "discriminate" against a feature but it doesn't actually change anything in the organisms themselves. So yes, i agree with the evos, NS and RM are completly different topics. They are both a vital parts in the general theory of evolution but as such are very different components.
RM is about change in individual organisms, NS is about change in populations of organisms.
The above alright? Maybe the last line was all that was needed. Not sure if everything was expressed fantasticly, but please let's find some common ground.
I may be in disagreement with the evos here but, Coming back to your initial post I would say that evolutionists seem to portray RM and existing variation as the driver of the theory of evolution and NS is the driver of the General theory of evolution.