I don’t see him state that he wants two sites.
Another solution is to export the blog by:
logging into wp-admin
Click Manage
Click Export
Keep “Restrict Author” set to “All”
And click “Download Export File”
Then in a new blog set up on a new domain
- Set up wordpress
- Log into yourmain.com/wp-admin/
- Click on “Options”
- Change the Weblog title
- Change the Tagline
- Change the WordPress address (URL)
- Change the Blog address (URL)
- Change the E-mail address (optional if you were using the old domain email)
- Click on Manage
- Click on Import and at the bottom chose WordPress
- Upload the XML file you downloaded. This is in the format of WXR/RSS which is a WordPress export file structred document.
I know wordpress inside out, I have my own personal blog in it and several hobby blogs. I also contribute code to the Codex and am one of the WordPress testers, if you need help with any of this just PM me. WordPress rocks!