First you want to click on the Start button (located in the lower left of your screen)…now depending on what operating system you’re using this next step might be a tiny bit different for you, but its pretty much the same…go to All Programs if you’re in XP then select Accessories and then system tools….in the system tools you’ll find the defrag program which will look like this:

Now, you can click the Analyze button and that will tell you if your hard drive needs to be defragged…if it doesn’t you don’t have to, if it does you click on the Defragment button. Then the program will begin defragging your hard drive.