Parsing a message with Manuel Lemos' PHP POP3 and MIME Parser classes

Warning: require(mime_parser.php) [function.require]: failed to open stream: No such file or directory in /home/trueoutd/public_html/forums/ips_kernel/pop3class/parse_message.php on line 18

Warning: require(mime_parser.php) [function.require]: failed to open stream: No such file or directory in /home/trueoutd/public_html/forums/ips_kernel/pop3class/parse_message.php on line 18

Fatal error: require() [function.require]: Failed opening required 'mime_parser.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/trueoutd/public_html/forums/ips_kernel/pop3class/parse_message.php on line 18