|Ok I'm a little confused. You said, "The goal is to get to any public website from either of my LAN clients that have domain names google.com and yahoo.com."|
Please explain to me why you would want to use domain names already in public use on your internal domains?
You'll excuse me for pointing out that this makes absolutely no sense and, should the people who own the aforementioned domain names get wind of it, they could sue you and have you legally blocked from using it even internally.