I have no clueAuthor: dacholiday Date: 2010-08-23Re: Windows 7 and Sierra 598.The only way to get a completely clean installation after you uninstall the program is by doing: After uninstallAuthor: lefty_pacman Date: 2009-12-09Re: Frustrating problem with 598U Broadband CardYou can try multi things depending on the issue, there is a long drawn out method and there is a quick one, let me give Autho