The NAW-5.2_Ranked_Server_Files.zip file you have requested: Modifications / Nations at War / Server Files / Nations at War Mod v5.2 Ranked Server Files - 1.65mb is not available. Perhaps try browsing all files for the game Battlefield 2 and upload any files you want to share or are missing. This is the only information we could locate:
If you want to your NAW Server to be Ranked (for Free) you will need this small package. The Readme file explains how to setup a BF2 Server. How to setup the NAW MOD server files and how to create a Free Ranked server.