Installing Wordpress on Hostgator

I just got set up with a domain and hosting and now I am being told using wordpress is the easiest way to get my site up and going. Looking around I found basic instructions on installing it through Fantastico. I selected my domain, left directory blank, and all that stuff, but I get an error when I try to install it.

You chose to install in the main directory of the domain forworkathomemoms.com, but there are conflicting filenames, therefore we can not proceed. Following filenames already exist in the main directory of the domain forworkathomemoms.com (path="/home/amandat/public_html/").You must manually remove these files before proceeding with auto-installation:
wp-admin
wp-content
wp-includes
index.php
license.txt
readme.html
wp-activate.php
wp-app.php
wp-atom.php
wp-blog-header.php
wp-comments-post.php
wp-commentsrss2.php
wp-config-sample.php
wp-config.php
wp-cron.php
wp-feed.php
wp-links-opml.php
wp-load.php
wp-login.php
wp-mail.php
wp-pass.php
wp-rdf.php
wp-register.php
wp-rss.php
wp-rss2.php
wp-settings.php
wp-signup.php
wp-trackback.php
xmlrpc.php