zoints seo kullanıyorsun heralde

htaccess'e şunları yazman gerekiyor:

Options +FollowSymLinks +MultiViews
RewriteEngine On
Rewritebase /
RewriteRule ^([a-z0-9_\-]*.(f|all)[0-9]+(p[0-9]+|/index[0-9]*)?\.html)$ forumdisplay.php?$1 [QSA,L]
RewriteRule ^([a-z0-9_\-]*.(t|p)[0-9]+(p[0-9]+|/index[0-9]*)?\.html)$ showthread.php?$1 [QSA,L]
RewriteCond %{REQUEST_URI} !(index\.php|\.css) [NC]
RewriteRule ^(archive|sitemap)/(.*)$ $1/index.php?$2 [QSA,L]