Powerpoint

The most noticeable area of change is at the top of the PowerPoint window. Instead of the menus and toolbars that you used to see, there's a tall band across the screen that contains many, very visual commands arranged into groups.

This band is called the Ribbon, and it's now your control center for creating a presentation. You'll get some background on its design and see its structure in detail so that you start to feel comfortable using it.

This is a good link to get an overview of the differences:
http://office.microsoft.com/training/training.aspx?AssetID=RP100683231033& ;CTT=6&Origin=RC100687671033