.NET mod Oracle.

Nedenstående giver mig en fejl når Connection.open skal eksekveres. Fejl er "Unable to load DLL (oci.dll)"

Filen oci.dll er ikke på min pc'er. Hvad mangler jeg at installere???

"Oracle ver er 7.34."

Dim sConnectionString As String = "User ID="XXXX";Data Source=Web1d;Password="XXXX"
Dim myConnection As New OracleConnection(sConnectionString)
Dim myInsertQuery As String = "insert into st_postnr values ('DK','99999','TEST',1,1,1,1,1)"
Dim myOracleCommand As New OracleCommand(myInsertQuery, myConnection)

        Try
            myConnection.Open()
        Catch ex As Exception
            MsgBox(ex.Message)
        End Try
        myOracleCommand.ExecuteNonQuery()
        myConnection.Close()