One of the good things about WordPress is the support they provide for their customers. Perhaps you’ve been digesting the whole WordPress.com versus WordPress.org situation and you really want to shift over to WordPress.org and have the freedom to do anything you want with your blog (in terms of adding code and advertising and other bits and bobs WordPress.com rejects.) The good news is that WordPress will help you migrate your blog.
Migrating involves moving all the data attached to your blog without losing any information.
WordPress has a Guided Transfer service specially designed for moving YOUR WordPress.com blog to WordPress.org. Thank you WordPress!
Installing the WordPress software at the recommended host of your choice.
Transferring over your entire WordPress.com site.
Installing and configuring some useful plugins.
Configuring and testing permissions so that you’ll be able to have one-click installs and upgrades.
Switching your domain(s) nameserver settings to point over to the new site.
Answering questions and providing guidance for you on your new WordPress installation for a two week period.
Super useful, right? This service costs $129US.
If you have bought hosting elsewhere (not with WordPress, but say with DreamHost or Little Hero) your new host can move your old blog content over for you. Just ask them.