FROM:http://www.basic-ultradev.com/articles/ADOConnections/

ODBC DSNLess Connections:

MS Access ODBC DSNless connection

Driver={Microsoft Access Driver (*.mdb)};Dbq=c:\somepath\dbname.mdb;Uid=Admin;Pwd=pass;

dBase ODBC DSNless connection

Driver={Microsoft dBASE Driver (*.dbf)};DriverID=277;Dbq=c:\somepath\dbname.dbf;

Oracle ODBC DSNless connection

Driver={Microsoft ODBC for Oracle};Server=OracleServer.world;Uid=admin;Pwd=pass;

MS SQL Server DSNless connection

Driver={SQL Server};Server=servername;Database=dbname;Uid=sa;Pwd=pass;

MS Text Driver DSNless connection

Driver={Microsoft Text Driver (*.txt; *.csv)};Dbq=c:\somepath\;Extensions=asc,csv,tab,txt;Persist Security Info=False;

Visual Foxpro DSNless connection

Driver={Microsoft Visual FoxPro Driver};SourceType=DBC;SourceDB=c:\somepath\dbname.dbc;Exclusive=No;

MySQL DSNless connection

driver={mysql}; database=yourdatabase;server=yourserver;uid=username;pwd=password;option=16386;

OLE DB Connections:

MS Access OLE DB connection

Provider=Microsoft.Jet.OLEDB.4.0;Data Source=c:\somepath\dbname.mdb;User Id=admin;Password=pass;

Oracle OLE DB connection

Provider=OraOLEDB.Oracle;Data Source=dbname;User Id=admin;Password=pass;

MS SQL Server OLE DB connection

Provider=SQLOLEDB;Data Source=machineName;Initial Catalog=dbname;User ID=sa;Password=pass;

MS SQL Server OLE DB connection using an IP address

Provider=SQLOLEDB; Data Source=xx.xx.xx.xx,1433; Network Library=DBMSSOCN; Initial Catalog=dbname;User ID=sa;Password=pass;

MS Text Driver OLE DB connection

"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\yourpath;Extended Properties='text;FMT=Delimited'"