I had a website up and running at http://www.jimchaseley.com but my themes "Blog" button wasn't working correctly. It was linking to the address of my WordPress installation (in a directory called /wp) rather than my website address.
Whilst trying to sort this out I foolishly changed the WordPress address in General Settings to remove the /wp directory. The website no longer appears correctly and I can't access the admin area. Is there a back door method for solving this? I use Filezilla but can also edit files in cPanel.