ope the locker with combination 9305 and then click on the filing cabinet
Depending on your locked file cabinet type, you may be able to open the locked cabinet if you tilt it enough so that there is a hole that your finger can poke through. You should then feel a metal piece, so push the metal up, and this should release the locks. However, if you do not have that type of cabinet, you may have to contact the cabinet company for an extra set of keys, or at last resort, destroy the cabinet.
You can't access the Filing Cabinet unless you have the Blueprint showing where the secret room is. Use Nate's combination to open his locker, and get the blueprint from the pile of papers. Now you can access the room below the filing cabinet.
There are plenty Safeco cabinets that have locking drawer mechanisms.
The second drawer, but that probably isn't the problem. You can click anywhere on the lower part to open the secret passage. What you need is the BLUEPRINT from Nate's locker outside in the second-floor hall. Opening the locker will reveal the blueprint, which you must have before you can access the filing cabinet. (see related question)
PFC files are "Personal Filing Cabinet" files from AOL. AOL will open them, and I think a couple of other programs will as well, but I'm not sure which ones.
If the drawers don't open (in the detention room), you obviously haven't got the blueprint from Nate's locker. Go out of the detention room and click on the messed-up, overstuffed locker. The combination is 9305. The locker will open and blast open to the side. Go back to the locker and click it to get the blueprint map. Then go into the Detention room (use the stink bomb if you haven't already) and open the filing cabinet. (see related question)
ask the person you stole it from
If the drawers don't open (in the detention room), you obviously haven't got the blueprint from Nate's locker. Go out of the detention room and click on the messed-up, overstuffed locker. The combination is 9305. The locker will open and blast open to the side. Go back to the locker and click it to get the blueprint map. Then go into the Detention room (use the stink bomb if you haven't already) and open the filing cabinet. (see related question)
If you have a file cabinet that has been locked and you cannot find the key, there is a code on the lock. You may need a magnifying glass to see it. Take the code to a locksmith and they should be able to provide a duplicate key for it.
How do we open the locked suitcase
Someone could of left the drawer open for a period of time, and it could of crawled in and stayed there, locked inside. Or there could be a hole somewhere on the outside!