Connectivity with DECS

I am trying to connect to SQL server using DECS. In the connection document I have chosen the provider as SQL Server7/2000, In the Data source field I have typed the IP address. In the Username and password field I have provided the database username and password. Now when I am trying to choose the tablename I am getting the following error:

"Error:

ErrorRecord: HResult: 0x80004005

Description: [DBNMPNTW]ConnectionOpen(CreateFile())

SQLErrorInfo : 01000

Source: Microsoft OLEDB Provider for SQL server

Connector ‘oledb’ method - Connect- (12325)"

Please suggest me the next course of action.

Thanks and Regards,

Sayantan.

Subject: Connectivity with DECS

Have you first installed and configured the ODBC drivers at the OS level?