I think I'm untangling some of the mental mess (on my part).
This is what I think so far:
1) The only save way to do faces is with JSF 1.2
2) JBoss has a built-in JSF 1.2 library -- that includes MyFaces
3) Therefore, there is no need in Eclipse to explicitly add the MyFaces 1.1.4 library
4) MyFaces has a datatable, and a modal panel which is what I need for this application
5) I still want to use RichFaces, but I think it should be as simple as menu click in Eclipse
6) Even though I have the JBoss Tools edition of Eclipse -- it still seems like it wasn't quite tested enough and has some Tomcat legacy configs that conflict with JBoss. Microsoft Alki (Seattle residents might get the reference...)