220339 Move blog to main domain

I want to move my Wordpress blog currently with its own domain name to be a subdirectory of my main domain. They are both at the same hosting company and the same username. My hosting company wrote me: "WordPress has an article on this at [login to view URL] You can follow the instructions for "Moving WordPress Within Your Site". For step 9, you'd need to move or copy all of your files from [blog] to the subdirectory under [main domain]." I also need akismet plug in installed, a new photo uploaded, set the blog up with feedburner, and suggestions on anything else I can do to clean up/improve the blog.