IDT cannot connect to SQL 2012

Hi,

  I have IDT 4.1 SP4 in my client machine, and SQL Server 2012 in a server.

  I have created 2 ODBC connections (System DSN - SQL Server Native Client 11.0) with the same name (i.e. _s64) using odbcad32.exe in windows\SysWow and windows\System32.

  In IDT, after creating a new project, i tried to create a new relational connection (Microsoft -> MS SQL Server 2012 -> ODBC Drivers) with Data Source Name = _s64 (as created above). However when i tried to test the connection, i received the message "[Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified".

  Any idea what could have gone wrong?

Thanks in advance,

LC