dns changer with flush

Hello. Im looking for someone to create a windows/mac dns changer with a flush dns button With this project I will will require the source code This is a basic vb job. Software to read dns server list from a text file xml ect stoed on a a website that will automatically check for updates everytime the software is restarted. This is aalso to include a flush dns buttom. There arr a couple more features but don't want to discuss themm On here.