Step One: I prefer chocolate chip, oatmeal raisin and sugar with sprinkles and my paypal account is locate---*THWAP* OW! DAMNIT! Fine, fine...I was serious, though! Grr...fine! Here's the "honest" version. Good for nothing slave driver....

Firefox: Go to the uppermost tool bar and click on Tools. From there scroll down to Options. One in the Options window, click on Privacy. After that, click on Cache or Cookies and then press the Clear button.

Internet Explorer AKA Satan's Spawn Of Internet Browsers: Similar to Firefox, go to your tool bar and click on Tools. Once there, click on Internet Options. Once in the Internet Options window, look at the tabs towards the top (They will say "General, Security, Privacy, Content...ect) and click on General. Towards the middle, you'll see a section labled 'Temporary Internet Files'. Below that it lists "Delete Cookies". Click on that and you're done.