You do not have to install the program, nor do you need to run it from a special directory. This program will detect all your Inatalled Expansion and Stuff Packs and will display them in a single iconic page for you to select or de-select a game for launching. Click yes to allow the program to make changes to your computer as this program does make changes in order to hide or uncover your installed EP's and SP's to your Sims 3 game launcher. To use this program, simply unzip the package to your desktop or to any subfolder in Windows and double click on the SimGameselector.exe program. This program provides a very easy to use game select and launch. Recently I bought all the sim EP's and found myself wanting only to launch a subset of the games. A very simple and easy to use Sim Game Selector.