I've managed to install WP3.5.1 (using a cPanel Fantastico script installer), changed the WP installation to run from its own directory, set it up as a network, and create one blog (edwinli.com/ux/) in addition to the main blog (edwinli.com/, which is currently hidden behind an old index.html file).
All that with the siteURL of the network set to edwinli.com. I've not got about 4 posts and 3 additional pages on edwinli.com/ux/.
I only just got around to wondering why the url shows edwinli.com/ux/ rather than http://www.edwinli.com/ux/ and why browsers will switch it to edwinli.com even if I type in http://www.edwinli.com/ux/.
I'd like to be able to change that so that my network is using http://www.edwinli.com.
I tried editing the site as a Network Admin from the Sites tab of the Dashboard. In the Edit page for the /ux/ blog, I changed the domain in the Info tab from edwinli.com to http://www.edwinli.com, and, in the Settings tab, I changed the siteurl from http://edwinli.com/ux/ to http://www.edwinli.com/ux/ and the home field from http://edwinli.com/ux/ to http://www.edwinli.com/ux/.
When I then went to http://www.edwinli.com/ux/, the home page came up, and the 3 other pages that I'd created came up. But when I clicked on any of the post titles to go to their pages, they 404'ed.
I thought maybe I needed to change those settings for the main blog, and hopefully thereby change them for the whole network, so I went to the edit page for the network at /. The settings for domain, siteurl, and home are set to http://edwinli.com, http://edwinli.com/wordpress, and http://edwinli.com, respectively, and they are all read-only.
I changed everything back to the way it was, just so that things would continue to work correctly.
But how do I successfully make this change? It's a small thing, the lack or disappearance of the www, but one that I'd like to change...
Some searching on this site and googling turned up these two guides that seemed relevant, but they seem to involve more of a change than I'm doing:
Are those indeed what I need?