White House sources reported Monday that Secretary of Defense Donald Rumsfeld is the only cabinet member who can figure out how to change the toner in the White House printer. 'Let me walk you through it again,' Rumsfeld said. 'You lift the toner-cartridge lid, then you move this switch back and remove the old cartridge. That goes in el garbage. Next, you remove this tape here from the new cartridgenow, that's important. If you forget that, you'll be printing blank pages all day long. Okay, so you just slide it on in, and you're good to go.' When reached for comment, Rumsfeld said he doesn't mind changing the toner, but doesn't see what's so hard about it. 