Thank you kindly, MCortez for a patch that:

The attached patch provides the necessary infrastructure to support 
security and authentication features of the xmlrpc server.
* Read/Write keys for accessing a Group's xmlrpc service.
* Requiring user session verification for write operations.

bin/OpenSim.ini.example

@@ -1245,11 +1245,15 @@
     ; The XmlRpcGroups implementation can be used against the publically available service
     ; that I have made available for testing.  Your group data is not guarenteed safe
     ; or available if you use this service, but it's available now and seems to work.  
-    ; The PHP code for the service is available for you to deploy to your own server.
+    ; The PHP code for the service is available from the Flotsam project for you to deploy 
+	; to your own server.  The Flotsam project is located at http://code.google.com/p/flotsam/
     ;
     ;Module  = XmlRpcGroups
 
     ;XmlRpcServiceURL       = http://osflotsam.org/xmlrpc.php
+	;XmlRpcServiceReadKey = 1234
+    ;XmlRpcServiceWriteKey = 1234
+	
     ;XmlRpcMessagingEnabled = true
     ;XmlRpcNoticesEnabled   = true