Well a lot of the map stuctures in swbf2 are models. You can download the modtools and get the swbf viewwer, export the models with it and then convert them to md3's. I've done this with blender. I am guessing a bit of the terrain is made in the level editor so you'll have to build the rest of the map in gtkradiant. Also the map will run terribly i think, because it will have to many md3's in it. I have had a framerate drop before from only having a few corridors of the tantive level converted to jka