using php with fastcgi on remote server

* Current setup:

Apache 2.0.55: ./configure --prefix=/path/apache
PHP 5.1.2: ./configure --prefix=/path/php --with-apxs2=/path/apache/bin/apxs
PHP 5.1.2 (cgi-fcgi): ./configure --prefix=/path/php-fcgi-version 
--enable-cgi --enable-fastcgi --enable-force-cgi-redirect
mod_fastcgi 2.4.2


* httpd.conf fastcgi section:

LoadModule fastcgi_module      modules/mod_fastcgi.so
AddHandler php-fastcgi .cphp
<Location /fcgi-bin/phpfcgi>
SetHandler fastcgi-script
Options +ExecCGI
</Location>
Action php-fastcgi /fcgi-bin/phpfcgi
AddType application/x-httpd-php .cphp


* /fcgi-bin/phpfcgi content:

#!/bin/sh
PHP_FCGI_CHILDREN=15
export PHP_FCGI_CHILDREN
exec /path/php-fcgi-version/bin/php


* phpinfo results:

.php : Server API Apache 2.0 Handler
.cphp: Server API CGI/FastCGI

(other info correspond with appropriate php)

So FastCGI/PHP setup seems to work on my local setup.
However I wish to use the FastCGIExternalServer method and do the PHP 
processing on a different server.

My questions:
1. Do I need to modify my phpfcgi script?
2. Can I simply add "FastCGIExternalServer /fcgi-bin/phpfcgi -host 
host:port" to my httpd.conf
3. Can I install PHP on the remote server where I want to and do I still 
need the cgi-fcgi PHP version on the webserver itself?
4. What is necessary on the remote server besides a cgi-fcgi version of 
PHP? Do I need to have a copy of the PHP scripts I wish to run or does 
this only have to be present on the webserver?
5. Can I start the php cgi-fcgi version with -b in the background or are 
other steps required?

Thanks in advance.
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