Defragmenting a hard drive is important to the stability and speed of a computer, but it takes a long time to do and you have to remember to do it. You can buy programs to do it for you, but why pay for it when Windows XP will do it for you for free?

Step 1: Go to Scheduled Tasks

First, you need to go to Start>All Programs>Accessories>System Tools>Scheduled Tasks

Step 2: Add a Task

Next, double click on "Add Scheduled Task."

Step 3: Whatever You Want

Then, click "Next" and click on whatever program you want. It isn't important what you choose because we will have to change it later. Click next and enter the title, time, day and frequency of this task. Then it will ask for your password, I read somewhere that you need a windows password for this to work but I'm not sure if this is true.

Step 4: Almost Done

After you have entered your password and clicked next it will say "You have successfully scheduled the following..." On this screen make sure you check the checkbox that says "Open advanced properties for this task when I click Finish." Then click "Finish."

Step 5: Last Step

Finally, change the "Run:" textbox to say "defrag c:" and click "OK." Now when it runs the task it will run "defrag c:" and it will defrag your C drive.