Battlefield 2 - Dedicated ranked server

I have Battlefield 2 - (only saw bad company 2 in options)

I have my own dedicated server and would like to know how to get it Ranked? Is there a process or method involved with getting a server ranked?

Google search was not helpful - Only way according to mostly what I found involved pirated or hacked versions.

I own a legal copy and would like to do this the right way. Please assist