How can I send an IDoc to SAP R/3

I am trying to discover how can I send an IDoc to SAP from webMethods. I have already used the Veranos�s conector called Enterprise Link and now I�m trying to use webMethods.

How can I send a message to SAP R/3? I have already tried to read the document, but it was not sufficient.

How can I see an IDoc or a RFC?

Could you help me?