I just installed some API's in my FS9, macros of military equipment. I put them in my EZ Scenery folder but they dont show up so I can place them. What am I doing wrong, do I need to convert them to BGL's?

API macros are only for use with scenery design programs that can use them (and convert them to bgl). Programs like Airport or FSSC. These macro files don`t go in FS9. They go with your scenery source files and get compiled to proper scenery along with all the other items you may be using such as runways, textures or standard buildings.

I haven`t used EZScenery but I think it is a tool for placing libtrary objects into FS. Macros will be no use here. What is required is precompiled library objects.