Custom template and search engine friendly story titles/categories

As you know we're working with a customized storyteller template that was customized by someone else with more php/apache knowledge than I have! Regardless, we're trying to get the SEF URLs for news articles and category titles. I've tried editing .htaccess using code posted in another thread, but because of the custome .htaccess it's not working. The site is: retirement-retirement.com. Here's our .htaccess file. Can it be edited for SEF urls?

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Options +FollowSymLinks
RewriteEngine on
RewriteBase /

RewriteCond %{HTTP_HOST} ^retirement-retirement.com
RewriteRule ^(.*)$  http://www.retirement-retirement.com/$1 [R=permanent,L]

RewriteRule ^(.*)_s([0-9]+).php$ /story.php?id=$1 [L]
RewriteRule ^(.*)_p([0-9]+).php$ /printer.php?id=$2
RewriteRule ^(.*)_c([0-9]+).php$ /category.php?id=$2
RewriteRule ^story-([^-]*).php$ /story.php?id=$1
RewriteRule ^category-([0-9]*).php$ /category.php?id=$1
RewriteRule ^archive-([^-]*).php$ /archive.php?id=$1 [L]
RewriteRule ^category-([0-9]*)-([0-9]*).php$ /category.php?id=$1&newspage=$2
RewriteRule ^thread-([0-9]*).php$ /thread.php?id=$1 [L]
RewriteRule ^thread-([0-9]*)-([0-9]*).php$ /thread.php?id=$1&page=$2 [L]
RewriteRule ^forum-([0-9]*).php$ /forums.php?id=$1 [L]
RewriteRule ^forum-([0-9]*)-([0-9]*).php$ /forums.php?id=$1&page=$2 [L]
RewriteRule ^rssfeeds.php$ /backend.php?action=help [L]
RewriteRule ^print-story-([0-9]*).php$ /printer.php?id=$1
RewriteRule ^profile-([^-]*).php$ /profile.php?user=$1 [L]

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many thanks!