Hi Suzer,
As John says, you're seeing an extended desktop.
You can choose to have Powerpoint display the slideshow on this external
monitor/projector as follows:
- Select Slideshow/Set up show
- You will see a section titled "Multiple monitors". There should be a
drop-down box that's labelled "Display slideshow on:". Click the drop-down
arrow and choose whichever is the OTHER option selected right now (Windows
may pick up the device name of the projector, for example).
- Click OK to close the dialogue box.
Now if you run the show it will display on the external monitor/projector.
Note that if you follow these instructions you won't see your slides on your
laptop PC, only on the projector. So if you click the checkbox that says
"Show Presenter View" in that dialogue box, you'll see the Presenter
interface that you may find useful.
If you want both screens to display the slideshow at the same time, then
follow John's advice.
Cheers,
Geoff