Help me for oracle9i install!

When installing,program display:
   < Certain actions need to be performed with root priviledes before the install can continue.These actions are stored in a Boune Shell script called /tmp/orainstRoot.sh.
     Please execute the /tmp/orainstRoot.sh script now from another window and then press "continue"
to continue the install.>
    Why?
    Please help me!　　　　　　

你为什么不仔细看一下提示的内容。