I have a Domain name by WordPress.com and mÃ¶chte to host website, the Domain names, hold you the topic, import you the Blog Posts, and able to be, over Plug in. Is that feasible?
What you want to do is to open a website account with a good web host. Then you use Fantastico to make a new WordPress blog.
You then upload all your pages from the old blog to the new blog. So the new blog is basically a copy of the old one.
Once all of your stuff is on the new blog, you go to the old blog and you setup a 301 redirect, for each of your posts. So if someone types in the address of a post, they are redirected to that post on your new blog.
Below I have put a link to a plugin to automate the 301 redirect process, an article about good blog hosts and an article about how the search engines see the transfer.