To change the password you use to log in to your HomeExchange.com account please:
Place your mouse pointer in the top right corner of the page and on the drop down menu that appears click on Account Details. On the resulting page enter a new password in the field saying "password" and repeat the password in the field next to it saying "confirm password". After you've typed and repeated the password don't forget to click on "Save" in the top right corner of the page.
If you are not logged in to your account and have forgotten your password and are unable to log in please follow instructions on how to reset your password here.