[Zope] Zope and Sybase Stored Procedures

Hi, I am working with zope and I want to securize my access to the data stored in a Sybase Server. So I am trying to do all my SQL requests by using stored procédures. The only thing that goes wrong is that I don't know how to make a call to a Sybase Stored Procedure within Zope. Can anyone help me ? Sincerly, Badara POUYE Infosources 16, rue Hoche Tour Kupka B 92906 Paris La Défense Tel.: (+33)141028000