Well, you can open up developer and create a new flow service. Add an element, and choose browse. In the above box, type in the wm.broker.util:isConnected and it should work.
TO see your WmRoot Node in developer, you have to modify the server.cnf file. I do not advise this as it exposes internal services that can have a fiercely negative impact on your environment if used incorrectly.
However, if you must, search the forums for the exact specifics here on wmusers to expose the WmRoot Package.
HTH
Ray
#webMethods#Integration-Server-and-ESB