MySQL: Enable Federated Engine in MySQL 5.0 Windows

Step 1:

go to C:\Program Files\MySQL\MySQL Server 5.0

Step 2:
open the file my.ini

just put federated after [mysqld] and save the file.

Step 3:

restart MySQL server and type command SHOW ENGINES .

Step 4:

You will see a value  'YES' in Support column for engine FEDERATED.