To Install simply OPEN the .rar file with WinRar or any other applicable application. Navigate to your Mount & Blade Warband Folder. Open Modules. Open Napoleonic Wars. Select All Content in the .rar file in WinRAR. Drag & Drop with mouse that content to an empty space inside your Napoleonic Wars Folder. If after extraction the program asks to replace files you have done atleast something correct. Replace All. To Uninstall simply investigate local files in steam and wait for it to complete. I am sorry that this release features maybe some unwanted UI changes that are yet WIP and to be changed. However since so many people pressed me to get their hands on it this is the first, unpolished version.