My previous entry related to XMS, which is IBM's library for connecting .NET apps (and C++ apps) to its MQ Brokers.

If you don't have MQ, then how can you connect with JMS?  The JMS interop issue is still a problem.

I found this link, to a solution posted a long while ago, by Rodrigo Salinas.  Gracias, Amigo.   It is sample code that allows you to generate RFH2 messages from a .NET app (including from VB.NET or C#).

Cheers!