"Driver={Easysoft IB6 ODBC};Server=ComputerName;Database=ComputerName:C:\mydatabase.gdb;Uid=username;Pwd=password"
Read more about this driver: Easysoft ODBC-Interbase driver >>
"Driver={INTERSOLV InterBase ODBC Driver (*.gdb)};Server=ComputerName;Database=ComputerName:C:\mydatabase.gdb;Uid=username;Pwd=password"
This driver are provided by DataDirect Technologies >> (formerly Intersolv)
"provider=sibprovider;location=localhost:;data source=c:\databases\gdbs\mygdb.gdb;user id=SYSDBA;password=masterkey;role=DIGITADORES"
Read more about SIBPROvider >>
Read more about connecting to Interbase in this Borland Developer Network article http://community.borland.com/article/0,1410,27152,00.html