Cannot create an instance of OLE DB provider for linked server

Hi all,When i log in to my SQL Server Management Studio with windows authenticationand try to run a stored procedure (stored procedure pulls data from a linked server)I get this error:Cannot create an instance of OLE DB provider for linked serverprovider name is: IBMDADB2How can i fix this so that my query will run the Stored procedure and return data?Thanks,Sach