Reflex XTR 5.04 CD version or later is running perfectly nice in a Vista environment. Earlier versions run nicely as well but the installer isn't Vista prepared. If you don't want to use a 5.04 CD version, please install Reflex on an XP computer and copy the directory c:progam filesreflex to your Vista PC using an network or a memory stick. In Vista you have to be administrator to set read/write rights to all users for the Reflex directory. Without a working installer, you have to make your own shortcuts to the desktop or to your task bar.