How to test xml-rpc?

I have php-xmlrpc.dll installed on a server as part of money service
in a virtual world (using WAMP). How can I do a simple check that it
is functioning OK from a remote machine?

I have searched for xmlrpc widgets, utilities and tools and could find
no simple gadget where I could enter the url of the server, press Ping
(or similar button) and get a response indicating that it is working ok.

Any help much appreciated.

Colin


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