Several questions about ModPerl

Hello. I am Webmaster and after reading some documentation I decided
test my CGI Scripts as ModPerl

To work I have installed in local PC ActiveState Perl 5.6.1 Buld 635 +
Apache Win32 1.3.27.
I downloaded mod_perl and install it via PPM install mod_perl.....
After this I have created a directory /mod_perl under my Doc_root and
I have put this simple one .htaccess file
#####
Options +Indexes +ExecCgi
SetHandler perl-script
PerlHandler Apache::Registry
PerlSendHeader On
#####

First Test:
The test Script is the following one

##################################
#! /usr/bin/perl

use strict;
print Content-type: text/html\n\n";
print" <HTML><BODY><H3>Environment variables </H3><UL>";

foreach (sort keys %ENV) {
my $val = $ENV{$_};
$val = ~ s|\n|\\n|g;
$val = ~ s |" | \ \ |g;
print" <LI>$_ = \" ${val} \" </LI>\n";
}

print" </UL></BODY></HTML>";
######################################

The script output under /mod_perl look like this:

Environment variables(*)

DOCUMENT_ROOT = "e:/home/emprear_com/htdocs"
GATEWAY_INTERFACE = "CGI-Perl/1.1"
HTTP_ACCEPT = "*/*"
HTTP_ACCEPT_ENCODING = "gzip, deflate"
HTTP_ACCEPT_LANGUAGE = "es-ar"
HTTP_CONNECTION = "Keep-Alive"
HTTP_HOST = "www.emprear.com"
MAIL_ADMIN = "webmaster@emprear.com"
MOD_PERL = "mod_perl/1.27_01-dev"
PERL_SEND_HEADER = "On"
SCRIPT_NAME = "/mod_perl/demo_mp.cgi"
SERVER_PROTOCOL = "HTTP/1.1"
SERVER_SOFTWARE = "Apache/1.3.27 (Win32) PHP/4.3.0
mod_perl/1.27_01-dev"
-----------------------------------------------------------------------------------------------

The same Script in /cgi_em (cgi-bin) show this:

DOCUMENT_ROOT = "e:/home/emprear_com/htdocs"
GATEWAY_INTERFACE = "CGI/1.1"
HTTP_ACCEPT = "*/*"
HTTP_ACCEPT_ENCODING = "gzip, deflate"
HTTP_ACCEPT_LANGUAGE = "es-ar"
HTTP_CONNECTION = "Keep-Alive"
HTTP_HOST = "www.emprear.com"
SCRIPT_NAME = "/cgi_em/demo_mp.cgi"
SERVER_PROTOCOL = "HTTP/1.1"
SERVER_SOFTWARE = "Apache/1.3.27 (Win32) PHP/4.3.0
mod_perl/1.27_01-dev"

(*) I have put here alone some variables to make easier the
explanation - [url]www.emprear.com[/url] is a server name defined in VirtualHost
Directive in my Local PC

Comparing both, the most remarkable differences are

ModPerl:
GATEWAY_INTERFACE = "CGI-Perl/1.1"
MOD_PERL = "mod_perl/1.27_01-dev"
PERL_SEND_HEADER = "On"

PerlCGI
GATEWAY_INTERFACE = "CGI/1.1"

************************************************** **
Second Test:
I create my own perl_module hello.pm and save in
/Perl/Site/Lib/Apache/hello.pm

####################3
package Apache::Hello;
use strict;
use Apache::Constants qw(OK);

sub handler {
my $r = shift;
$r->send_http_header;
$r->print("<html><body>Hello World!</body></html>\n");
return OK;
}
1;
#####################

Then add in httpd.conf:

PerlModule Apache::Hello
<Location /hello>
SetHandler perl-script
PerlHandler Apache::Hello
</Location>

Finally go to "http://www.emprear.com/hello" and get

"Hello World! "

all it's OK
My questions are:

1. Are these two tests enough to check that ModPerl has been
installed correctly?
2. View my .htaccess at the top "Options +Indexes...", However if I
call to http: //.... /mod_perl / I always get a 404 errorpage
Only putting full url to the script ..../mod_perl/demo_mp.cgi the
script is executed fine.