Nobody will help you - or even read your message - until you undestand that
Help! is a ridiculous message subject and post a message with a more
descriptive subject.
One more thing: there is no such thing as a "powerpoint poem". Try to
describe that some more also.
You would want to use either credits animation or a motion path to scroll
the textbox(es) up. Then do a motion path down to scroll down.
If you need more information, we need more specifics like version of PPT and
what exactly do you need to know how to do with the animation? What have you
tried so far and why isn't it working for you?