Add PMPro billing fields to the edit user profile page. You must Paid Memberships Pro and the Register Helper plugin installed. Then add this to a custom plugin or your active theme's functions.php

pmpro_add_billing_fields_to_profile.php

/*
  Add PMPro billing fields to the edit user profile page.
  You must Paid Memberships Pro and the Register Helper plugin installed:
  http://wordpress.org/extend/plugins/paid-memberships-pro
  https://github.com/strangerstudios/pmpro-register-helper
*/
function add_billing_fields_to_profile()
{
	global $pmpro_countries;
	
	//check for register helper
	if(!function_exists("pmprorh_add_registration_field"))
		return;
	
	//define the fields
	$fields = array();
	$fields[] = new PMProRH_Field("pmpro_baddress1", "text", array("label"=>"Billing Address 1", "size"=>40, "profile"=>true, "required"=>false));
	$fields[] = new PMProRH_Field("pmpro_baddress2", "text", array("label"=>"Billing Address 2", "size"=>40, "profile"=>true, "required"=>false));
	$fields[] = new PMProRH_Field("pmpro_bcity", "text", array("label"=>"Billing City", "size"=>40, "profile"=>true, "required"=>false));
	$fields[] = new PMProRH_Field("pmpro_bstate", "text", array("label"=>"Billing State", "size"=>10, "profile"=>true, "required"=>false));
	$fields[] = new PMProRH_Field("pmpro_bzipcode", "text", array("label"=>"Billing Postal Code", "size"=>10, "profile"=>true, "required"=>false));
	$fields[] = new PMProRH_Field("pmpro_bcountry", "select", array("label"=>"Billing Country", "profile"=>true, "required"=>false, "options"=>array_merge(array(""=>"- choose one -"), $pmpro_countries)));
	$fields[] = new PMProRH_Field("pmpro_bphone", "text", array("label"=>"Billing Phone", "size"=>40, "profile"=>true, "required"=>false));	
	
	//add the fields into a new checkout_boxes are of the checkout page
	foreach($fields as $field)
		pmprorh_add_registration_field("profile", $field);
}
add_action("init", "add_billing_fields_to_profile");