Go back out of presenter view. Move the Powerpoint application to the other window and maximize it. Then try presenter view again and see if they switch places.
Possibly this bug from earlier versions if you imported and old .ppt?
http://books.google.com/books?id=S8b6TtYGHi8C&pg=PA25&lpg=PA25&dq=powerpoint+images+reversed&source=bl&ots=qW8i5kDdGV&sig=7emDGVYpwUhW3VqNivemxgv8PvM&hl=en&ei=1AxRS9LxEYbANZTA0Y0J&sa=X&oi=book_result&ct=result&resnum=10&ved=0CCwQ6AEwCQ#v=onepage&q=&f=false
Cut the ground prong off and turn the plug over.
Sounds like it’s set up for rear projection, in which you need a reversed image at the projector.
sorry everyone, should have checked more. I didn’t see the “show presentation on” dropdown box. There is where I tell PowerPoint where to send the “audience” view and where to send the “presenter” view. Thanks anyway.