if you follow these instructions you cant go wrong.
N.A.W MOD 5.0 Installation instructions
1. Download the 5.0 Stand Alone exe...double click the .exe ...
the installation program will open and after a few "next" clicks the program will find your BF2 mods folder and install the mod.
http://www.nawtek.com/5.0/NAW-MOD-5.0.exe2. Download the NAW 5.01 Patch (3mb) and run the installer.
http://www.nawtek.com/5.0/NAW-5.01-patch.exe3. Additional Map Packs can be downloaded from the "Downloads" section
http://www.nawtek.com/5.0/NAW-5.0-MAP-Pack-1.exehttp://www.nawtek.com/5.0/NAW-5.0-MAP-Pack-2.exehttp://www.nawtek.com/5.0/NAW-5.0-MAP-Pack-3.exehttp://www.nawtek.com/5.0/NAW-5.0-MAP-Pack-4.exeUse the desktop icon "Play Nations at War" to play Nations at War.
A list of content can be found in the full release note's