[cozmin]

That's the problem, i don't understand what i should add. This is the content from httacces

Options +FollowSymLinks
# Comment the following line (add '#' at the beginning)
# to disable mod_rewrite functions.
RewriteEngine On
# Please note: RewriteBase is the path of your forum
# to your root vB installation (i.e. / or /forums without ending slash / if it is a subdirectory)
RewriteBase /

RewriteRule ^sitemap\.xml$ sitemap.php [L]

RewriteCond %{REQUEST_FILENAME} -f
RewriteCond %{REQUEST_FILENAME} (admincp|modcp|clientscript|cpstyles|images)/
RewriteRule ^(.*)$ $1 [L]

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d

RewriteRule ^(.*)$ yabbseo.php?bbseourl=$1&%{QUERY_STRING} [L]