Just got word from Julio @ TechSpot.com that their America's Army tweak guide has been posted! Here's a snip....

Although first releases came with its hiccups, America's Army has mostly overcome its teething problems and is doing pretty well now. Based on the latest version of the Unreal Engine, this guide will take you through configuring the game for an optimum performance on your system, better network play and fixing other issues that might arise! Best of all, is free of charge for you to download