How to use Suexec with Apache2 ?

[kernings]

Hello guys

I'm trying to use Suexec in my computer. I've installed apache with default settings (so Suexec is installed with my emerge Apache , Gentoo) .

My settings on /etc/conf.d/apache2

# SUEXEC Enables running CGI scripts (in USERDIR) through suexec.
# USERDIR Enables /~username mapping to /home/username/public_html
#
APACHE2_OPTS="-D DEFAULT_VHOST -D INFO -D LANGUAGE -D SSL -D SSL_DEFAULT_VHOST -D SUEXEC -D PHP5 -D USERDIR "

When I'm restarting my apache, I've the correct line on my log who indicate Suexec is running well :

[Sat Jan 26 15:33:39 2008] [notice] Apache/2.2.6 (Unix) mod_ssl/2.2.6 OpenSSL/0.9.7i PHP/5.2.5-pl0-gentoo configur$
[Sat Jan 26 15:41:44 2008] [notice] caught SIGTERM, shutting down
[Sat Jan 26 15:41:46 2008] [notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[Sat Jan 26 15:41:47 2008] [notice] Digest: generating secret for digest authentication ...
[Sat Jan 26 15:41:47 2008] [notice] Digest: done

I create an user
/usr/sbin/useradd evolv -m -s /bin/bash

In /var/

http://www/evolv/public_html

folder, I create php file with :
"<?php echo "user: ".exec('whoami');?>"

My vhost below :

<VirtualHost *:80>
ServerAdmin webmaster@evolv.com
DocumentRoot /var/[URL unfurl="true"]www/evolv/public_html[/URL]
ServerName [URL unfurl="true"]www.evolv.com[/URL]
ServerAlias evolv.com
SuexecUserGroup evolv evolv
CustomLog /var/log/apache2/evolv-web-access_log combined
ErrorLog /var/log/apache2/evolv-web-error_log
<Directory />
AllowOverride All
Options FollowSymLinks -Indexes Includes ExecCGI
</Directory>
</VirtualHost>

# suexec -V
-D AP_DOC_ROOT="/var/www"
-D AP_GID_MIN=100
-D AP_HTTPD_USER="apache"
-D AP_LOG_EXEC="/var/log/apache2/suexec_log"
-D AP_SAFE_PATH="/usr/local/bin:/usr/bin:/bin"
-D AP_SUEXEC_UMASK=077
-D AP_UID_MIN=1000
-D AP_USERDIR_SUFFIX="public_html"

SuexecUserGroup is well using because, if I changed anything in this line, I have an error when I'm restarting apache. So, no error on apache restart, but always : "user: apache"! What's wrong ?

Sorry for my poor english , I'm french!

Thanks all
Bye