[Code check]

session_start should often go straight after the opening php tags

 

<?php

session_start();

 

[!--quoteo--][div class=\'quotetop\']QUOTE[/div][div class=\'quotemain\'][!--quotec--]If I want to now carry that username cookie over to the next page, do I also need to put in a set cookie command?

 

in your next page

 

if(isset($_COOKIE['UserName'])) {
echo "welcome back ". $_COOKIE['UserName'];
}
else {
echo "No user cookie found";
}

[Script is slowwww.]

also, you could try a limit function to limit the amount the script deletes and just run it several times.