After my recent SQL 2k5 BI session, here at TVP Reading, I had an enquiry asking for more info regarding the SAP provider I showed in the list of providers available to SQL Server Integration Services .  The best public information I can find is @ http://msdn2.microsoft.com/en-us/library/ms216599.  The provider isn't publicly available at the moment but when the product is released it will be made available for download, and will not be in the box.  I don't know a lot about SAP R3 but I believe this provider will also allow access to BW - I'll check, if it doesn't I'll post an edit in the next few days.