Fastcgi servers

hi guys how do i add more than one fastcgi server in the fastcgi module?
thanks
mark

my config is like this now:

server {
    listen       8080;
    server_name  localhost;

    #charset koi8-r;

    #access_log  logs/host.access.log  main;

    location /static {
        root   /home/mark/work/groupcards;
    }
    location / {
        root   /home/mark/work/groupcards;

    fastcgi_pass 127.0.0.1:8083;

    fastcgi_param SCRIPT_FILENAME $fastcgi_script_name;
    fastcgi_param PATH_INFO       $fastcgi_script_name;
    fastcgi_param QUERY_STRING    $query_string;
    fastcgi_param CONTENT_TYPE    $content_type;
    fastcgi_param CONTENT_LENGTH  $content_length;
    fastcgi_param REQUEST_METHOD  $request_method;
    fastcgi_param REMOTE_ADDR     $remote_addr;
    fastcgi_param REMOTE_PORT     $remote_port;
    fastcgi_param SERVER_PROTOCOL $server_protocol;
    fastcgi_param SERVER_ADDR     $server_addr;
    fastcgi_param SERVER_PORT     $server_port;
    fastcgi_param SERVER_NAME     $server_name;
}

}

upstream servercom {
server 127.0.0.1:44440;
server 127.0.0.1:44441;
server 127.0.0.1:44442;
server 127.0.0.1:44443;
server 127.0.0.1:44444;
}

location ~ .app$ {
fastcgi_pass servercom;
fastcgi_index stream.app;
fastcgi_param SCRIPT_FILENAME
/var/www/htdocs$fastcgi_script_name;
include /etc/nginx/fastcgi.conf;
}

thanks a lot!
works great!!! nginx ROCKS!!!