Editing WordPress Password Changed Email

Hello,

I want to change the ###ADMIN_EMAIL### sent in the password notification email without changing the admin email on my site. So, I want to send a custom email in this section.

$pass_change_text = __(
'Hi ###USERNAME###,

This notice confirms that your password was changed on ###SITENAME###.

If you did not change your password, please contact the Site Administrator at ###ADMIN_EMAIL###

This email has been sent to ###EMAIL###

Regards,
All at ###SITENAME###
###SITEURL###'
            );

Secondly, how do I change the email address that sends emails in WordPress from wordpress@mysite.com to support@mysite.com?