The package includes two executables, one to launch OverlayXhair and the other to configure the crosshair's appearance. For this to work in Windows Vista and 7, Dynamic Window Manager must be activated.
To do so, you can try looking for fake fullscreen tutorials, which can help you configure the game to run in windowed mode without borders. It can be used with both online and offline games, but note that the game must be launched in windowed mode, not in full screen mode. It simply places a new crosshair on the screen, in the attempt to help you find your target easier. In other words, it does not write code to the game memory and does not read data. While some might argue that this is a way to cheat, you must know that OverlayXhair does not interfere with the game itself. OverlayXhair comes to the rescue, providing a completely customizable crosshair in the middle of the screen. However, there are games that do not provide it, especially when a higher difficulty level is selected. The crosshair helps you know where the weapon will fire and eliminate your enemies with ease. Playing video games at a professional level requires skill and experience, especially in the case of shooters.