Since Simba has been key in the OLE DB for OLAP (ODBO) and MDX query language connectivity to SAP BW and SAP HANA, I get a lot of people coming to me and asking about SAP BW connectivity.  Recently, there was an online thread I was involved in about connectivity to SAP BW.  Thomas Zurek, the VP for R&D of BW, got involved in the thread and I asked him to post his comments on his own blog.  Being the nice guy that he is, Thomas obliged.  Here is a link to what Thomas wrote: http://www.sdn.sap.com/irj/scn/weblogs?blog=/pub/wlg/23784.  If you do anything with SAP BW, I strongly recommend you read what Thomas has written.  After all, he does have the ultimate inside track!