Office 2010 has this new Background Removal tool which helps you in getting rid of background by using new capabilities and algorithms from the Microsoft Research. It allows you to select parts of images which can be cropped or just select what to include and you are done.
Steps to remove background image :
- Select any image and click on Picture Tool which pops up over the main menu.
- Select Remove Background which displays tools to let you adjust what to crop.
- Adjust the borders and click on Keep Changes.