Stupid but useful trick to impove build time with Qbsp. Just start up Windows Explorer and go to View=>Options and select the "File Types" tab. Select "New Type.." and a window with three text boxes appear. Then in "Description of type:" type "Quake MAP"; in "Associated extension:" put ".map". Now select new and in "Action put "Build Map". Next select browse and find Qbsp. Push OK. You can click on edit if you want to chang the icon. Now just click on any .map file and it will build it.With this it will just open a DOS box and not a DOS prompt wich takes up less memory, wich will improve build time. You can add new actions for Vis and Light. Just right click on the file to get the other actons. Steve Noonan