I don't think you can "hide" that. I suggest calling networksolutions - 1-800-779-1710 (some times difficult to get someone on the phone though) Otherwise, if you registered your domain name through networksolutions you want to change your personal info to may be your office address for example. That can be easily done through this link from networksolutions: http://networksolutions.com/makechanges/
Hope that helps.
While the "rules" state that you have to use a legitimate phone number and address, there's no reason not to use a role designation instead of your own name. For example, you'll commonly see "Hostmaster" instead of a first and last name. You could just as easily and legitimately use something like "Network Administrator" or "Accounting Department."