CartIt NT is asking for username and password
CartIt NT does not ask for a username and password. CartIt requires a password to access the CartIt Manager URL and this password is requested via a Web page, NOT a dialog box. If you receive a dialog box when you access CartIt asking you for your username and password, then the folder where CartIt is installed is not properly set to allow for the executing of programs to the WORLD. The permissions are likely set so that only you or the administrator have permission to execute the program (CartIt NT, cartit.exe).