Site not redirecting

I just launched a site marthakurz.com where WordPress is in its own directory (/wordpress). I followed the instructions for doing this in the codex( and in fact this is my standard way of installing WordPress) however if you browse to marthakurz.com/wordpress instead of being redirected to marthakurz.com you get a 404. I suspect the .htaccess but am out of my depth could someone look this over and see if it seems correct. Or perhaps provide another thought about the issue

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /wordpress/
RewriteRule ^index\.php$ – [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /wordpress/index.php [L]

</IfModule>

# END WordPress