Rearrange Your PowerPoint 2007 Slides
You can switch to Slide Sorter View in two easy ways:
The PowerPoint Slide Sorter View is shown here. The following list tells you how to rearrange, add, or delete slides from Slide Sorter View:
Move a slide: Point to the slide and then hold down the left mouse button. Drag the slide to its new location and release the button.
Delete a slide: To delete a slide, click the slide to select it and then press Delete or Backspace.
If your presentation contains more slides than can fit on-screen at one time, use the scroll bars to scroll through the display. Or you can use the zoom slider at the bottom right corner of the screen to make the slides smaller.