Well, I saw the article about the newer nVidia version of Impulse, so I downloaded it and installed it on Windows XP. I rebooted, and now there is no icon for it in my system tray. So I uninstalled that version with Add/Remove Programs, deleted the Impulse folder, ran my registry cleaner, rebooted and installed the version I had of Impulse prior to that. I still have no icon in the stem tray. Any ideas?