There are two ways to do this: 

1. If you don't know your password:
   1. Click on the Forgot Login? link just below the Log in Button
   2. Follow the directions and a new password will be emailed to you.
      
      
2. If you know your current password:
   1. Log onto your account.
   2. Use "Profile" menu, then "Update YourProfile"
   3. Click on Contact Info tab and enter new password
   4. Save changes - bottom of page.