I've installed the patch to upgrade KSEA to FSX with the ORBX PNW scenery, I've followed the instructions with the exception of renaming the ORBX files to prevent them from being displayed. Instead I've placed them in folders within thier respective scenecery since this method has always been effective for me. However the aiport appears to be on two levels, with the runways being on berms and the North end of the runways disappearing into a berm. KSEA is situated on a plateau so I believe that what I'm seeing is that parts of the airport are just below the level of the plataeu. Also only the two original runways are visible, the newest runway 16R/34L doesn't show. The instructions reference a flatten file but this appears tobe relative to FS 2002 and I'm running FSX. I also have Ultimate Terrian X and FS Genesis United States Terrain Mesh for FSX installed, anyone have any ideas? MartyV