Connecting to Oracle Supplier Network (OSN)

Has anyone used webMethods to connect to the Oracle Supplier Network (OSN)? I found some documentation on that site that states the need for some specific HTTP Headers but no examples are provided. I found documentation in another manual (Oracle XML Gateway Users Guide) that listed some of the indicated fields but listed them under HTTP Body. Does anyone have any experience that they could share with me?

Thanks Very Much

…Terry