Validate Email and Email1

I am trying to on the join page get members to validate there email address ... by typing them in twice (same as passwords) ...

I found this code originaly posted to do that on version 6.0 ... and it doesn't work at all. Can someone point me in the right direction

if(isset($_POST[''Email''] ) && strlen( $_POST[''Email''])) {
if( process_pass_data( $_POST[''Email''] ) == $arg0 )
return true;
else
return false;
} elseif( isset( $_POST[''Email1''] ) && strlen( $_POST[''Email1''] ) ){
if( process_pass_data( $_POST[''Email1''] ) == $arg0 )
return true;
else
return false;
}
else
return true;