Well, it took me a while to build and learn, but here is my Unreal Map:

http://www.MotorCityImprov.com/brad/textures.zip and http://www.MotorCityImprov.com/brad/DMLorna9.zip

Thank you everyone who helped! I ended up going wtth UnReal by popular vote here at work and it comes with a free editor. The map is of where I work. I am still working on it, but it works pretty good as a DM map. The TV Studios and offices hold the weapons and the outside areas hold the health or armor. Bot support is prettty good for my first try. They kick my butt sometimes! I was going to make it bigger but we've only managed to play 3 or 4 player and were spending mroe time looking for one another rather than blowing each other up!