4rum, In the upper right hand corner (below the banner ad) of this page you should see:

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Click on 'My Profile'

On that screen, on the left side of the screen there is a grayish column. The first listing in that column is 'Login (change password)'. Click on 'change password'.

That will bring you to another screen where you just need to re-enter your new password twice and then hit 'Submit'

If that doesn't work.. PM me.