Customer Service -- NOSMOKE.EXE

  I used to work in a computer store and one day we had a gentleman call
  in with a smoking power supply. The service rep was having a bit of
  trouble convincing this guy that he had a hardware problem.

    Service Rep:  Sir, something has burned up within your power supply.
    Customer:     I bet that there is some command that I can put into
                  the AUTOEXEC.BAT that will take care of this.

    Service Rep:  There is nothing that software can do to help you with
                  this problem.

    Customer:     I know that there is something that I can put in...
                  some command... maybe it should go into the CONFIG.SYS.

 [After a few minutes of going round and round]
    Service Rep:  Okay, I am not supposed to tell anyone this but there
                  is a hidden command in some versions of DOS that you
                  can use.  I want you to edit your AUTOEXEC.BAT and add
                  the last line as C:\DOS\NOSMOKE and reboot your
                  computer.

 [Customer does this]
    Customer:     It is still smoking.
    Service Rep:  I guess you'll need to call Microsoft and ask them for
                  a patch for the NOSMOKE.EXE.

 [The customer then hung up. We thought that we had heard the last of this
 guy but NO... he calls back four hours later]

    Service Rep:  Hello Sir, how is your computer?
    Customer:     I called Microsoft and they said that my power supply
                  is incompatible with their NOSMOKE.EXE and that I need
                  to get a new one. I was wondering when I can have that
                  done and how much it will cost..