One more time, help removing default scenery

I noticed my previous post was read 7 times with no response..so here I go again, Does anyone out there know how to remove default buildings at San Juan, Puerto Rico airport?. I downloaded a very good airport scenery, but the default buildings are still showing up. I am familiar with the "Exclude=" entry, but I cannot remember the specific coordinates to enter, plus, whats more important, what follows, is it: all, or items, or objects?...Thanks for helping...Hernan 
