Changing the apache status of a document?

Hi - I'm using an "ErrorDocument 404 /404.php" config option in Apache to process files that don't exist in the web tree. This all works fine. However, the log files record the hit with a code of 404 -- which is correct, but not what I want :) Is there anyway to change the status? Ideally so that it is reflected in both what the client sees and what's in the logs? I've tried sending a "Status: 200 OK" header, but that doesn't do it (found that in apache's docs)... Any ideas? Thanks! -philip