Now, enter the Configuration (F5 for the lazy), and go to Nodebuilder.
*SIDENOTE* Nodebuilders are basically the clean up crew for the map.
They make sure that everything is all set, and package the map for the game to use.*ENDNOTE*
In this, you'll see quite a few things. What we are going to do is run Zennode on the map everytime we save or test it. To do this, click the drop box to the right, and click Zennode Normal Build. Then, at the other drop box, select "Always Rebuild Nodes".
Now, go to Testing, and click the browse button. Direct DoomBuilder to srb2win.exe, and in the box below that, the one you can actually type in, type in the following:
-file "%F" -warp "%M"