[Zope] ZSql methods

Hi Does anyone konws how to create a ZSQL method, or Python Scripts or External Scripts that can pass and receive parameters to/from Oracle database Stored Procedures? Does anyone knows how to use Z Oracle Stored Procedures? How Does Z Oracle Stored Procedures pass and receive parameters? Regards Ricardo PS: HELP! HELP! HELP! HELP! HELP! HELP! HELP! HELP!