It said this:
Cannot modify header information - headers already sent by (output started at /home/roconza/public_html/siggy.php:220) in <b>/home/roconza/public_html/siggy.php</b> on line <b>225</b><br />
Readfile appears to be disabled on your host.
But this says other wise
http://kawaiipetshop.x10.mx/check.php