Ok! The simulator is now up at
www.treemme.org/~liga/dom2/Combat_Simulator.zip
Remember that you must have Java installed! If you need help with setting the path just post the question here... basically, your OS must have a path to Java.exe, so you can set the Java install directory as a default path.
For example, in Windows XP, right click on My Computer, go to Advanced, Environment Variables, and change "Path" to this:
%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\sy stem32\WBEM;c:\progra~1\java\bin
where the Last one is wherever you installed Java (for me it is in Program Files).