This can be easily done by .htaccess rewrite rule.
Example :
http://www.loupesusa.com/contacts.html
.htaccess rule : RewriteRule ^contacts.html/?$ help.php?section=contacts&mode=update [L]
Code:
# Clean URLs [[[
Options +FollowSymLinks -MultiViews -Indexes
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{ENV:REDIRECT_STATUS} !^401$
RewriteRule ^contacts.html/?$ help.php?section=contactus&mode=update [L]
RewriteCond %{REQUEST_URI} !^/(payment|admin|provider|partner)/
RewriteCond %{REQUEST_FILENAME} !\.(gif|jpe?g|png|js|css|swf|php|ico)$
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-l
RewriteRule ^(.*)$ dispatcher.php [L]
</IfModule>
# /Clean URLs ]]]