Okay. Bear in mind that I do not know the full story of what you have done so far, so part of this is just guess-work:
*You had a WordPress.com blog, with your own domain pointing to it ( http://www.chroniclesofkate.com )
*You wanted your own WordPress install, so you signed up with DreamHost, and then pointed your Domain at your DreamHost account
*You were expecting to be able to login and have all of your blogs from your WordPress.com to be there, but instead you found yourself staring at a blank empty WordPress site with a generic theme
Does that sound right so far?
If so, then your old WordPress.com site probably still exists out there, it just no longer has your domain pointing to it. You might be able to access it if you go to WordPress.com and log in with your original username and password.
Your new WordPress site is a brand-new shiny installation of WordPress. You own it. It is currently empty, but you can fill it. You can export the data from your old site (if it still exists and you are able to login ) and then import it into your new site. You can add new themes, plugins and edit your new WordPress site however you like.
But first, try to see if you can get into your old site so you can get all of your old posts and such.