Run different PHP versions on virtual hosts in apache 2.2

How can I configure Apache 2.2 server to have PHP 5.3 in all virtual hosts, except one virtual host in which to run PHP 4.4? I have all the php and .dll files.

If it is useful for someone, I found this example on the net:

# Port-based virtual hosting: every php install uses a vhost on a different port
Listen 8447
Listen 8423

### BASE virtualhost
### set up the main php version we're using
<VirtualHost *:80>
    LoadModule php5_module "E:/php5/php5apache2_2.dll"
    PHPIniDir "E:/php5"
    php_value extension_dir "E:/php5/ext/"
    AddType application/x-httpd-php .php
    AddType application/x-httpd-php-source .phps

<VirtualHost *:8447>
    # it would be handy to use php_value directives, but CGI versions of php will not grok them,
    # so we rely on different php.ini
    SetEnv PHPRC "E:/php4/"
    ScriptAlias /php447/ "E:/php4/"
    Action application/x-httpd-php447 "/php447/php.exe"
    AddType application/x-httpd-php447 .php .inc
    # apache 2.2 denies access to the php cgi executable, unless it is explicitly granted
    <Directory "E:/php4/">
      <Files "php.exe">
        Allow from all

<VirtualHost *:8423>
    SetEnv PHPRC "E:/php423/"
    ScriptAlias /php423/ "E:/php423/"
    Action application/x-httpd-php423 "/php423/php.exe"
    AddType application/x-httpd-php423 .php .inc
    <Directory "E:/php423/">
      <Files "php.exe">
        Allow from all