For those who have newly purchased a HP EX470/475 or are thinking of buying one, I have a recommendation. Do not sign up with HP's recommended domain name provider TZO. Use Microsoft. With TZO you have to pay $9.95 per year after the first year for a personal domain and $24.95 per year for a custom domain. If you want a signed certificate, you MUST have a custom domain, and you have to sign up with and pay someone else for it. Big hassle. With a Windows Live Custom Domain, you get a signed certificate, and you get the domain and certificate at no charge. The certificate is very important if you want to use something like the Web Folders 4 WHS add-in. This add-in allows me to use my Second Copy file sync software from anywhere in the world as if I were sitting on my home network. This is insanely invaluable to me.