gEE.. thanx friends for the links... i haven't tried them yet but i will... i'll give you the results... well, actually i did not import them neither create them from the GDL part of ArchiCAD, though it's one of my interest to know the GDL scripting language..
what i normally do is create the object in ArchiCAD work environment itself, i ormally use slabs, walls or any tool suitable.. and i save the object manually...
but its hard to change the parameters for these objects, because they are not there!...
that is why i asked..
but anyway, let me check out the links friends have given me and give out the results.. thanx guys...