Attorneys can be wrong too. I don't think it's in everyone's best interest to follow blindly on advice...and one should never be afraid to ask questions.
John's not wrong. There are some grey areas in domain name law. This is not one of them.
Just to add briefly to what others have said of your Paries Hilton example, names and last names can acquire distinctiveness, and with it, trademark protection, when they are used widely in commerce in connection with the offering of goods or services. Entertainers accrue trademark rights in their names when they become famous.
Unless you are alleging that someone registered your family name because you are famous, you lack any discernable right or remedy under the law, and even if you
were famous, your last name likely would still be fair game for a company in the business of offering email accounts based on family names.
Please feel free to accept or reject this advice as you wish.