Normally, when you want to defragment your hard disk drive, you have to go through many shortcuts in the Control Panel or Start Menu. But now you can add the defragment to the right-click context menu so that you can just right-click on a partition (or volume) and select Defragment. Here is how :
Download add_defragment_menu_vista.zip to your Desktop. Extract the contents of the Zip file to a folder. Double-click on add_defragment_menu.reg. Choose Yes when asked. And you are done.
Now if you right click on a drive, you will see Defragment context menu option. Choosing this option will open a command prompt window, showing the deragment process of a chosen volume.