How to Increase computer speed using disk cleanup and defrag

The thenewboston shows you some short tips on how you can speed up your computer. He is using the Windows Vista Operating System for the demonstrating. He says he believes it should also work with Windows XP. The first thing that he says to do is go to your start panel and then go to "All Programs" then to "Accessories" then click on Disk Cleanup. After watching this video and performing the steps, your computer should run faster then what it is running at now.