It would help us help you if you gave us the name of the website, we could then see which files are not loading and why.
Yes, the installations section of this forum is the correct place to ask this question, (how to and troubleshooting would also have been suitable).
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.
