[TYPO3-english] Custom 404 with 404 header and CoolURI?

[Jan Bednarik]

You could download the 404 page as static HTML, and then point the URL 
in <behavior> tag to this static page. That would be almost the same as 
placing the whole page into CDATA section.

-- 
Jan Bednarik
www.bednarik.org - web about TYPO3 in czech