Pretty much what the topic title says: I had domain A, and I set up everything. Then I decided I liked domain B, since it had the title of my blog in it an all. So I purchased domain B, set it up as the primary domain for the hosted site, and after some fiddling waiting for it to all go through, it got me back to the front page of my blog.
Except it keeps redirecting me back to the old domain name, which isn't existant anymore. I'm working on getting that back up and pointed at the new domain name, but for the time being, what files do I need to go digging into to find the information I need to change in order to redirect it all?