There are two demos that can be run.  A simple heatbugs and an extended
heatbugs that draws an unhappiness graph using Excel via COM.

1. Get and install Swarm 2.0.1 from
   http://www.santafe.edu/projects/swarm/release.html.

2. Get xml4j.jar from http://www.alphaworks.ibm.com/tech/xml4j and install it
   in this directory.

3. If you are using Windows, and have Office 2000 and want to see
   the Java/DOM/COM/Excel demo, get the current Microsoft
   Java virtual machine (build 3188) and Microsoft JDK 3.2 
   from http://www.microsoft.com/java.  For the Excel demo,
   you'll need to get updated Swarm DLLs from 
   ftp://ftp.santafe.edu/pub/swarm/2.0.1-fixes.  gunzip and install the DLLs
   in Swarm-2.0.1\bin and the jar file in Swarm-2.0.1\share\swarm.

   Then, from a Swarm `terminal' run "./runjactivexforexcel".  
   Tweak the paths in this script to your install locations.

4. To compile the Excel-equipped demo, run "./mscompile".
   To compile the generic demo, run "./compile".
   Again, tweak the paths as appropriate to your system.

5. To run the Excel-equipped demo, run "./runexcel".
   To run the generic demo, run "./run".
