Here:

http://udmon.sourceforge.net/

After setting it up in its own directory, it will ask for the location of ud.exe. The basic worldcommunitygrid program in its directory will become slot #1 by default.

There is a slight difference between here and the grid.org version. Run udmon-wcg.bat when starting each time after a reboot, etc.

Other than that, instructions may or may not be obvious. Start with the documentation manual on udmon.sourceforge.net

Ask again if you get stuck. Don't make too many slots until you understand what's going on. http://forum.grid.org has a very large forum thread on the operation of UD Monitor. The operation is the same but dataset names will be slightly different for here. You may want to watch what's happening over a period of a few executions, especially when a slot is ready to finish and a new one starts.