simple windows app to add DNS to pc -- 2

i want a simple windows app that will add DNS to pc it should work on all Windows machines when user install app he will see a button activate ( when it will be clicked then app will add ip from this link [login to view URL] to DNS - for all networks mobile and wifi) ----i think there is command that can do it if u type in command promt , so this part is easy ---- [login to view URL] button activated is clicked user will see a popup to enter a password then he can deactivate dns only if he know password [login to view URL] in app home screen will write how much time app has been installed (also date time of last installation - i think when user install app to create a file with timestamp in a hidden folder so it can get info from there) 3. also if possible to show how many times app have been uninstalled .(it will count how much timestamps have on that hidden folder that means how much times app have been installed) so user canot change dns if app is activated , u need to do something so app to check if dns is changed and also to start on pc start see image on atachment please. for what i will use app": parents can install in childs pc . laptops and when they activate the dns there will be blocked some bad sites and only parents can deactivate it coz just they know the password, and they will see where the last time was installed the app so they will know if childs uninstalled it I WILL CHOSE LOWEST BID