Call RFC from SharePoint

Dear All
I post this query to the forum after searching a lot to arrive a solution.  I need a tips / guidence from you guys.
My requirement is as follows; 
We have SAP R3 and SharePoint Portal.  In the Sharepoint portal the Purchase Requisitions are being raised. I need to push this Purchase Requisiton to SAP.  I need the steps to establish connectivity between Sharepoint and SAP.  ( I have RFC ready to create PR in SAP).  However, I need the connectivity established.  Can some one help me to install and establish connectivity
Your <removed by moderator> response will help me a lot
Regards,
Venkat
Edited by: Thomas Zloch on Oct 30, 2011 3:56 PM

Hi,
Yes you can call from the bapi from shared point. Please check the below links.[Integration Between sap and Share point|http://www.microsoft.com/enterprise/partners/sap/#fbid=MoB7wAXXPbA]
[Share Point & Share point Integration|http://objectwin.com/SAPSharePoint.aspx]
Regards,
Madhu.

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