I have a new Dell XPS laptop with Win XP Pro SP2 that I cannot get iTunes and QuickTime installed on. The install process appears to complete OK, but when you try to run iTunes, you get an error windows that says iTunes has encountered an error and needs to close. When you try to run QuickTime, nothing happens except that you get an hourglass with the cursor for a second or two. Uninstalling and reinstalling does not work. iTunes will uninstall, but the QuickTIme uninstall appears to complete only to report an error when you click on Finish. The Windows Installer Cleanup Utility has been used, but that has not helped either. Any ideas as to what to try next would be appreciated. Thanks.