TGibson, many thanks for your reply.
What I really want to do is to replace generic buildings with other that 'look' similar to the real ones in shape or form. And I have seen that the ones in the current default library, are not. I thought that somewhere some developers, would have made other objects that could be downloaded. For example if you look at the CPX 2005 scenery for fsx, the developer included photos of the real structures (real houses) that you see when taxiing to rwy 13 at CPX....IT is simply awesome!
I understand fs9 has more limitations, and Fs2020 will not run in my classic HP laptop.
But, nevertheless thanks!