apache2 vhost redirection

I have defined differents hosts in my windows host file, one for every project release (rc1, rc2 etc..) I would like to create one vhost per release so I can redirect directly to its subdir, for example :

pp15.mv => http://localhost/mv/pp15/.....

pp16.mv => http://localhost/mv/pp16/.....

moreover, I need to redirect the host ppX.mv to an autologin url, something looks like /mv_dbname.php?login=testlogin&mdp=202cb962ac59075b964b07152d234b70

so, finally, I want to type this in my urlbar :

http://pp15.mv

and get redirected to

http://pp15.mv/mv_dbname.php?login=testlogin&mdp=202cb962ac59075b964b07152d234b70

In my virtual host file I have something like this :

<VirtualHost *:80>
    ServerName pp15.mv
    DocumentRoot "D:\apache\htdocs\mv\pp15"
    <Directory "D:\apache\htdocs\mv\pp15">
        AllowOverride All
        Allow from All
    </Directory>
    RewriteEn开发者_JAVA技巧gine On
    RewriteRule ^/index.php /myvisitv3_dbname.php?login=johsmi&mdp=202cb962ac59075b964b07152d234b70 [R]
    RewriteRule ^(/)?$ /myvisitv3_dbname.php?login=johsmi&mdp=202cb962ac59075b964b07152d234b70 [R]
</VirtualHost>

The first redirection works great, but if i try to redirect directly the host, I get a redirection error (too many redirections occured)

Do someone have an idea ?

Thank you previously.

ok, finally here what I did :

<VirtualHost *:80>
    ServerName pp16.mv
    RewriteEngine on
    RewriteCond %{HTTP_HOST} ^pp16\.mv$ 
    RewriteRule ^(/)?$ /mv/pp16/xxx/xxx_dbname.php?login=johsmi&mdp=202cb962ac59075b964b07152d234b70 [R]
</VirtualHost>

no [L] on redirection because app have internal redirection, and no document root because php won't be able to read $_SERVER['REQUESTED_URI'] var correctly, so I could have did this (I prefer)

<VirtualHost *:80>
    ServerName pp16.mv
    DocumentRoot "D:\apache\htdocs\mv\pp16\xxx"
    RewriteEngine on
    RewriteCond %{HTTP_HOST} ^pp16\.mv$ 
    RewriteRule ^(/)?$ /xxx_dbname.php?login=johsmi&mdp=202cb962ac59075b964b07152d234b70 [R]
</VirtualHost>

but php would have misread the app path (/ instead of /mv/pp16/xxx/)