Dear Colin Nicholls
Thanks for your coopration but in sample u use sa and ??? or Blank password but it is not work in ODBC Connection and when i am using "sampleclient" account and "frodo" password under in SQL server Authentication using a login ID and password entered by the user. but it is also not work pleas help me error message is

Connection failed
SQL state:'01000'
SQL Server Error:2
[Microsoft][ODBC SQL Server Driver][Shared Memory]ConnectionOpen(Connect()).
Connection failed:
SQLState:'08001'
SQL Server Error: 17
[Microsoft][ODBC SQL Server Driver][Shared Memory]SQL Server does not exist or access denied.