If your current blog is hosted at wordpress.com and you do not have access to the server, you may have better luck exporting your current site using the WordPress dashboard's export tools and importing into a fresh copy of WordPress.
Info from wordpress.com about Exporting your content:
Quicky instructions, Exporting/Importing your Blog:
Set up your Dreamhost account and domain, install WordPress on it via DH One-Click installer or manually.
Following the instructions from Wordpress.com (above), create your export file. Do not remove your old blog yet.
Go into your new blog dashboard.
Find and activate the theme you are using for your current blog in your new blog.
Import the file created by the WordPress exporter. (Tools > Import)
Make sure you check import images if you have images in your blog so WP brings them over, too!!
Assuming you checked all, you'll have all your posts, pages, comments, custom fields, categories, and tags.
You will still have to re-connect your menus and reset widgets and install plug-ins you are using but you'll have your content and full access to your new blog.
Hope this helps!