good luck in your venture, dns and bind can be tricky on a linux box, most hosting companies, even ones that specialize in linux hosting, use win boxes for dns, since they are really easy to setup, i however find them to be unreliable, but for simplicity and if you aren't familiar with dns at all, and the way it is used, you may want to think about setting up a lowend win box, doesn't need to be anything fancy, a 166 will even do, for your dns situation, just my 2 cents though