Just to add to the custom 500 page theme.....

# in httpd.conf you need some lines like:

ErrorDocument 404 /custom_error/error_404_not_found.htm
[snip]
ErrorDocument 500 /custom_error/error_500_internal_server_error.htm

# then you need a custom doc where you specified it above, the guts of
+ our 500 is .....

<div id="contentstart">
<h3>500 Internal Server Error</h3>
<p><img border="0" src="/images/thumbs_down.gif" width="14" height="17
+"> 
Sorry a 500 Internal Server Error error has occurred.</p>
<p>The server encountered an unexpected condition which prevented it f
+rom fulfilling 
the request. This is probably due to routine maintenance. Then again w
+e may have to 
sack the programming team! This error has been logged and we will look
+ into it, 
if it persists.</p>
<p>Sorry you have experienced a problem.</p>
<p>Click <a href="/index.htm">here</a> to return to our entry page, or
+ 
<a href="/index/contact.htm">here</a> to contact us about the issue.</
+p>
<p><i>Kind Regards</i></p>
<p><i>The BlahBlah team</i>
</p><hr width="100%"><i>Apache 1.3.29 Server at blah.org Port 80</i>
</div>
[download]