Gentlemen,

What Caravel said is the absolute top notch defrag process.

If you really want to do it properly then go here:

http://www.tweakguides.com/TGTC.html

Down load the Tweak guide companion and go to page 60 of the 175 page document. There you will find all your answers and a comprehensive set of tasks to follow.

Happy Defragging Gentlemen.

PS Do it once a week or once a month. Do it in safe mode for the page files every 3 to 4 months.

Saying it damages your HDD is like saying driving a car damaging your engine.

What are you going to do?? Not drive it!!

Drive it, and look after it at the same time.