Props to the people at ESRI. ArcWeb is very cool. Their people are very helpful and responsive as well. About 2-3 hours after my last post, I got a TrackBack from James Fee about my use of ArcWeb. I posted a comment on his blog asking for some help using Perl with SOAP::Lite (which is a pretty weak SOAP implementation, IMHO). Minutes later I received comments back with pointers to some examples.
I was able to get the whole thing plotted tonight. I still need to fiddle with the map coverage. I simply asked for a best-fit map without realizing that we've had people come to Crossroads from all over the place. We've got a pretty good spread!
Once I get the ArcWeb code cleaned up I'll make it available.