I can not run it chroot apache help

hello friends I have a vps with openbsd 5.0I want every user has his own web
space example /home/ user/public_html I have the following in
/var/www/conf/httpd.conf:  UserDir /home/*/public_html
below: # Control access to UserDir directories.  The following is an example #
for a site where these directories are restricted to read-only and # are
located under /users/<username> # You will need to change this to match your
site's home directories. # <Directory /home/*/public_html>     AllowOverride
FileInfo AuthConfig Limit     Options MultiViews Indexes SymLinksIfOwnerMatch
IncludesNoExec     <Limit GET POST OPTIONS PROPFIND>         Order allow,deny
Allow from all     </Limit>     <Limit PUT DELETE PATCH PROPPATCH MKCOL COPY
MOVE LOCK UNLOCK>         Order deny,allow         Deny from all     </Limit>
</Directory>
I have this in my virtualhost
<VirtualHost my_IP>     ServerAdmin [email protected]     DocumentRoot
/home/user/public_html    ServerName www.domain.com     ServerAlias domain.com
ErrorLog logs/domain.com-error_log     Options ExecCgi Includes MultiViews
Indexes FollowSymlinks SymLinksIfOwnerMa tch     CustomLog
logs/domain.com-access_log common </VirtualHost>

i changed the file http.conf the following lines: UserDir /var/www/users for
/home/user/public_html
and <Directory /users/*> for <Directory /home/*/public_html>
and DocumentRoot /var/www/users/user for DocumentRoot /home/user/public_html
in directory /home/user/public_html i have a file index.html when I go to
http://www.domain.com I get a 404

What am I doing wrong?

thank you