Hello again all!!Thank you for the responses before, and thank you in advance for patience too...I am working on my home airport: KCVG, which has a new runway (36L/18R) that was completed last month and I am adding it to MSFS. I have already added the runway and taxiways with the wonderful and intuitive AFCAD. I attempted to exclude all the default scenery using ExcBuild, since it was cluttering up the taxiways and runways. Now that I have the .bgl files for the exclusions, where do they go? The tutorial says to put them in the addon scenery/scenery folder(since i am only modifying the default KCVG). How do I see the changes in MSFS? I know how to add other add-on scenery but apparently I don't know how to add individual .bgl files. Second question. I'm assuming I will have to manually edit the "tiles" that the airport sits on so i can get the nice blank grass skirting around the new runway I added (36L/18R). I downloaded Ground 2K4 and SBuilder but have yet to figure out how to use them. I am new at scenery modification (obviously) and am actually quite fascinated with the prospect of cleaning up inaccuracies and/or adding new runways as the airports themselves build them. I thank you all for your help and hope that soon I will be modifying airports fluently. Right now, it's pretty much no-going...anyway, thanks again and cheers!!-Adam