On my other domain mookiesplace.org I have had it setup as "mookiesplace.org" without the "www" in front of it. When someone comes as "www.mookiesplace.org" it still works. So, I figured, it's a lot of typing to do "www.ultramookie.com", so I am making the main option in WordPress to point to "ultramookie.com". It has no affect on anything, it is purely a cosmetic change.