I recently changed the address for this blog. It was at http://www.tomandpilar.net/wordpress/ and it is now at http://www.tomandpilar.net/tom/ – Doing this in WordPress is quite straightforward once you find the right helpfile!
I looked in Options/General in WordPress and found the Blog Address field – this has the explanatory text “If you want your blog homepage to be different than the directory you installed WordPress in, enter that address here.” – so I figured that was all I had to do. I updated the address and waited – checked the new address and nothing.
Now I’m publishing successfully to the desired address.