part of my .htaccess

# URL Rewrites - thanks Bonus from SA!
# initialize RewriteEngine
Options         +FollowSymLinks
RewriteEngine   On
RewriteBase     /bcp/

# single-level rewrite: for section index pages
RewriteCond     %{REQUEST_FILENAME}     !-f
RewriteCond     %{REQUEST_FILENAME}     !-d
RewriteRule     ^([a-zA-Z0-9\-]+)/?$    index.php?s=$1 [L,QSA]

# double-level rewrite (most used): for pages within a section
RewriteCond     %{REQUEST_FILENAME}     !-f
RewriteCond     %{REQUEST_FILENAME}     !-d
RewriteRule     ^([a-zA-Z0-9\-]+)/([a-zA-Z0-9\-]+)/?$   /bcp/index.php?s=$1&p=$2 [L,QSA]