Problems in using Gplus Data Access Component to invoke SAP-RFCs

Hello integration-gurus!
We need to make RFCalls out of routing strategies within Genesys Universal Routing Server (URS).
We learned that we need to install the Gplus Data Access Component (DAC) in order to do so. After copying the rfc32lib.dll into installation directory of DAC the DAC establishes a valid RFC-connection to ourer SAP-CRM 5.0 system. But if the URS requests the definition of the specific remotefunction (the DAC provides this information as a WSDL for URS) it gets a timeout. Now we think that we need special files (perhaps XML-schemata provided by SAP) to transform the DDIC-types provided by the RFC into SOAP-specific datatypes communicated from DAC to URS.
Where can we get these files?
Has anyone experiences with such an integration scenario?
Kind regards
Michael

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>
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