Hi Mark, it is non native COM gateway and can be used even from non windows platform, that is the idea behind using http://j-interop.sourceforge.net . I could not follow what you meant by Web services option, is there a way to interoperate with COM runtime using Web Services? For sure, the web service could directly redirect the call to a COM server, but we intend to directly call the COM server. Do you mean such a scenario/ approach ? ----->[ESB] ---> [Listerner] ---> [Web Service] ---invoke dll or j-interop --> [Com Server] We intend: ----->[ESB] ---> [Listerner] --j-interop ---> [Com Server] Thanks for the reply, best regards, Dirk View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4130524#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...