What does this error mean?

• From: Ned Harkey <ned213@logicsouth.com>
• Date: Thu, 23 Oct 2003 13:45:49 -0400
• To: <www-validator-css@w3.org>
• Message-ID: <000801c38e18$eb50b480$290976cc@hal9000>

What does this error message mean and how can I fix my page so that the error goes away?

Target: http://www.gijoelinks.com/
I/O Error: Invalid byte 2 of 4-byte UTF-8 sequence. 

Received on Thursday, 23 October 2003 13:57:38 UTC