Subdomeny pomoci htaccess

Mam problem, potrebuji presmerovat neco.domena.cz na domena.cz/_sub/neco, pricemz bude vynato www ako neco
a potrebuji zabezpecit, nech sa neaplikuji dalsi podminky na tito subdomeny

htaccess mam takyto:


RewriteEngine On

RewriteBase /

RewriteCond %{HTTP_HOST} [a-zA-Z0-9]+.domena.cz
RewriteCond %{REQUEST_URI} !^/_sub/
RewriteRule ^(.*)$ /_sub/$1 [L]

RewriteRule ^$ /sk/index.html [R]
RewriteRule ^([a-z]{2})/$ /$1/index.html [R]
RewriteRule ^blog/?([a-z0-9_-]+)$ /index.php?l=sk&m=blog&u=$1 [L,QSA]
RewriteRule ^~?([a-z0-9_-]+)$ /index.php?l=sk&m=blog&u=$1 [L,QSA]
RewriteRule ^intro.html$ /index.php?l=sk&m=index [L,QSA]
RewriteRule ^([a-z]{2})/([a-z0-9_-]+)/?([a-z0-9_-]+)?.?([a-z0-9_-]+)?(.html|.xm l|/)$ /index.php?l=$1&m=$2&t=$3&f=$4 [L,QSA]
RewriteRule ^([a-z]{2})/blog/?([a-z0-9_-]+)$ /index.php?l=$1&m=blog&u=$2 [L,QSA]


Vedel by nekdo poradit?

Nikto?