Shutdown Dialog Restart Options

When starting X/TDE from a login manager, the Shutdown confirmation dialog displays a Restart button with a little arrow. Selecting and holding the button reveals the options to select how the system restarts. The button options are from the GRUB menu.lst. I don't know whether LILO options are supported. How is the default GRUB boot option supposed to get changed? That is, the user needs admin permissions to modify menu.lst. When the user does not have those permissions, should the Restart button then be a generic button with no options like the other buttons? Darrell