PAA format plugin (ArmA 2) for Adobe Photoshop by kegetys.
This nice plugin will be inserted in your photoshop\plugins\ dir, it then allows you to load ArmA 2 PAA/PAC textures so you can save them for Texview2 readable format.
Go to Kegetys ArmA homepage for download.
Important Note: You should use TexView2 to open and save your .paa files, this plugin is not working perfectly in comparison.