RewriteEngine On
RewriteCond %{REQUEST_URI} !^/admin/
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^([^\.]+)$ index.php?q=$1 [NC,L]

#
# Rewritebase /
# RewriteCond %{REQUEST_FILENAME} !-f
# RewriteCond %{REQUEST_FILENAME} !-d
# RewriteRule ^(.*)$ index.php?q=$1 [L,QSA]