i am trying to build charlton park from piece of cake i need trees down the run way but when i put them in fssc they do not apear in fs2002 anyone know why  ??? ??? ??? ???

Probably because you haven't installed the textures.

If you are using Gerrish's tree library it is a bit difficult to understand. If you look for my trees in the SimV scenery section they come as APIs (macros) with individual seasonal textures. You can place exactly the types of trees you want in FSSC at the exact scales you want, to get various heights etc and you just copy over the textures you need for the trees you use, just as you do for any other macro.

BTW my tree textures are mods of Gerrish's which he kindly allowed me to use. Also my trees rotate to face the pilot so you get a better looking tree as well.