RewriteEngine on
RewriteRule ^lesson-([0-9]+)-([0-9]+).html show.php?L=$1&Page=$2&h=1 [L]
RewriteRule ^lesson-([0-9]+).pdf options.php?action=pdf&L=$1 [L]
RewriteRule ^lesson-([0-9]+).rtf options.php?action=word&L=$1 [L]
RewriteRule ^cat-([0-9]+)-([0-9]+).html showcat.php?id=$1&Page=$2&h=1 [L]
RewriteRule ^sitemap.xml sitemap.php [L]
RewriteRule ^rss.xml rss.php [L]
RewriteRule ^statistics.html misc.php?action=stat [L]
RewriteRule ^search.html search.php [L]
RewriteRule ^lastlsn.html search.php?action=lastlsn [L]
RewriteRule ^tellfriend.html misc.php?action=tell [L]
RewriteRule ^contactus.html misc.php?action=contact [L]