I installed WordPress in a sub-directory (a folder called "blog") and have a home or start page in the main site directory. I want to use the that page, "index.html," for the main website address. I found the place in the Admin-->Options panel where it says "If you want your blog homepage to be different than the directory you installed WordPress in, enter that address here." I did so, but choosing that option immediately broke all my page links within the blog, generating 404 errors. I clearly don't know enough about this yet to stay out of trouble. Can somebody clear this up for me?