that key saves any settings you ahve. Detail view, Arrange Icon....all those... as for loading the QuickLaunch..... it works from cmdlines.txt. The settings HAVE to be loaded before the desktop loads. for it to work on your current intall, just trying to reg file, you have to log in as a different user, load up that other user's hive into Regedit, and then add the entry, or you could use the SID HKEY_USER for the test, but it won't work during an actual install. or you could load up a RunOnceEX entry, that then calls teh Registry file to import the Quicklaunch settings. But it has to be done BEFORE the desktop loads. As for accurately getting the binary numbers, just set whatever settings you want, and export the key. It will retain the correct settings. Though some settings you think are in it, may not be, so don't blame the key.