Go morning jennhind,
When you browse to http://desmoinesfeed.com/test/wp-content/, you shouldn't see anything - that is the folder that holds themes, uploads, plugins, etc. To view the site, you want to go to http://desmoinesfeed.com/test/. When I go there, I get an error page. This page lists some steps that may help. It may be that the files do not have the right permissions - there is a link on that page for your hosting provider's solution to that.
To answer the wp-config.php question, that should be in the folder where you installed WordPress. In this case, it appears that you installed it at http://desmoinesfeed.com/test/ - the wp-config.php file should be in the test folder.
However, I'm wondering if you didn't complete the installation. Normally, after you upload the WordPress files, you'd then visit http://desmoinesfeed.com/test/ and be walked through a wizard that creates the wp-config.php file. The other option is to manually create the wp-config.php file by copying wp-config-sample.php to wp-config.php and filling in the DB_NAME, DB_USER, DB_PASSWORD, and DB_HOST fields.