You must select a 6-9 character login ID and a 6 character PIN. Remember these as you will need them to resume your work if you are interrupted. If you resume an application, but forget your Login ID/Password, you can retrieve it using the Forgot Login ID or PIN link on the Returning Applicant Login page.
Please disable any and all tool bars that you have installed, such as Google, Yahoo, etc. To do so, go to Tools> Manage Add-Ons> Enable or Disable Add-Ons, look for all tool bars and disable them.