Space, the unobtainable frontier?

Is there anything that will 'FLY' while in space? I hate that as soon as I reach the upper limits of the atmosphere, my aircraft(and all spacecraft I've tried) just go dead!
I know I can slew, but that sux!
Also, I've seen videos of the shuttle in space with the bay doors open and decent VC, and a beautiful reentry, The vid. info claims it's FSX and the launch sequence shots seem to back this up, I've DL all the shuttles I can find and all experience the above mentioned problem,
Am I just not looking in the right place or is someone using Orbiter and just pulling the sim communities chain? :-?

Also, I've seen videos of the shuttle in space with the bay doors open and decent VC, and a beautiful reentry, The vid. info claims it's FSX and the launch sequence shots seem to back this up, I've DL all the shuttles I can find and all experience the above mentioned problem,
Am I just not looking in the right place or is someone using Orbiter and just pulling the sim communities chain? :-?