"How do I extract the data from SAP? Login to SAP?"
eSpline has an application called “Avenue from VC” for that, with several techniques available depending on how much setup you are willing to do - from a zero-footprint extractor that uses SAP Java Connector to IPC knowledgebase imports to ALE/IDocs/Product Data Replication (PDR).
Login to SAP is accomplished either interactively, or from cleartext passwords in jcoDestination files on the server.
