There is no "fixing" here at WordPress.com. Nothing is broken.
You hire a web host http://wordpress.org/hosting/ and set up a WordPress.org software install. http://wordpress.org/ Then you export your content out of the WordPress.com blog http://en.support.wordpress.com/export/ and import it into the WordPress.org install.
WordPress.com and WordPress.org are completely separate and have separate logins. We do not provide support for WordPress.ORG software installs here at WordPress.COM
If you don't have a username account at WordPress.ORG click http://wordpress.org/support/ and register one on the top right hand corner of the page that opens, so you can post to the support forums there and receive advice from WordPress.ORG bloggers.