robots.txt and htaccess

[agradation]

When I delete a page from my site, I'd like robots to remove it from their database, and humans to be redirected to a CGI which tells them what to do in that particular case.

If I add this line to .htaccess :
Redirect permanent /subdir/page.html (http+servername)/cgi-bin/404.cgi?some_ID

and this to robots.txt :
User-agent: *
Disallow: /cgi-bin

will I achieve my goal?
Thanks for help.

[Dijkgraaf]

Some spiders won't recheck a URL received from a 301 redirect, so they may actually request that cgi-bin page.

[agradation]

Thank you Dijkgraaf.

I am mostly worried about major spiders like Google or MSN. Will the majors act correctly?

My second worry is about the question mark in Redirect's target.

[Dijkgraaf]

I been thinking about setting up a series of pages to actually test the spiders behaviour on such issues as 301 redirects and others, I just haven't done it yet.
So I can't give a definite answer as yet.