Are you trying to change the server signature? Do you want the server to identify itself as having the webserver google.com when in actuality it is Apache?
Take a look at the ServerSignature ( http://httpd.apache.org/docs/2.2/mod/core.html#serversignature ) and ServerTokens ( http://httpd.apache.org/docs/2.2/mod/core.html#servertokens ) directives.
That should help You: http://www.webhostingtalk.com/showthread.php?t=461951 in combination with: http://www.howtoforge.com/repackage_deb_packages_debian_ubuntu
