'Microsoft SQL Server ODBC Driver example
    cnstr = "driver={SQL Server};server=myserver;" & _
      "database=pubs;uid=sa;pwd="
   cn.Connect = cnstr

   'Microsoft Access ODBC Driver example (version 2.x)
   cnstr = "Driver={Microsoft Access Driver (*.mdb)};" & _
     "Dbq=c:\program files\devstudio\vb\biblio.mdb;" & _
     "Uid=Admin; Pwd="
   cn.Connect = cnstr

   'Microsoft ODBC Driver for Oracle example
   cnstr = "Driver={Microsoft ODBC Driver for Oracle};" & _
    "Server=OracleServer.world; Uid=demo; Pwd=demo"
   ' Note that 1.0 version of the Microsoft  Oracle driver used
   ' "ConnectString" notation instead of "Server" 

NOTE: O nome do driver precisa estar entre {}, assim : “{SQL Server}”