How do you find the key to open the door in club penguin?

its different each time go up in the staff only room find the sofa and click under the sofa pick up the black thing and the paper clip then go to the computer get the black thing out your pocket thing and put it in the computer slot click the power button on the cp computer click my files then combnation number

if you wanna be my bud im called orange21232 and my other penguin is called pink54565 and ill be on hibernate