GIYF, here is the result of a simple search ( thanks to http://www.404errorpages.com ):
The Error 404 "Page not found" is the
error page displayed whenever someone
asks for a page that’s simply not
available on your site. The reason for
this is that there may be a link on
your site that was wrong or the page
might have been recently removed from
the site. As there is no web page to
display, the web server sends a page
that simply says "404 Page not found".
The 404 error message is an HTTP
(Hypertext Transfer Protocol) standard
status code. This "Not Found" response
code indicates that although the
client could communicate to the
server, the server could not find what
was requested or it was configured not
to fulfill the request.
answered
22 Aug '11, 04:03
rickross ♦♦
12.5k●28●149●72
accept rate:
46%
This doesn't actually appear to be an OSQA-related question, so it really doesn't belong here at meta.osqa.net. I have allowed it because of the small chance that it is somehow vaguely related to your effort to get OSQA running.