I think you have some problems with your settings (Dashboard > Settings > General) in the fields:
-WordPress Address (URL)
-Site Address (URL)
While your website is expected to be at:
-http://getgreenrain.com/nerdswrite/
It gives the wrong address to the supporting files:
-http://getgreenrain.com/testwordpress/wp-content/themes/flat/style.css
Which should be:
-http://getgreenrain.com/nerdswrite/wp-content/themes/flat/style.css
Since it is unlikely that you can login to the admin, you will have to fix this in the database. Instructions are here:
http://codex.wordpress.org/Changing_The_Site_URL
Easiest solution is to add this to your wp-config.php
define('WP_SITEURL','http://getgreenrain.com/nerdswrite');
Then fix it properly in the database.