Are you resetting you're password; which you can do from the User CP -> Profile second where you enter your current e-mail and password then enter the new password. Or are you just making sure you can create a new cookie when you whipe your old ones; which all you'll have to do is put in your Username and Password again in the Login Box when you come back and it'll set the cookie up again - thinking you've never been here before.
A Knight is sworn to Honour. His heart knows only Virtue. His blade defends the helpless. His might upholds the Weak. His word speaks only truth. His wrath undoes the Wicked.