At least you have to set the address and the pool. the username is just the address + worker name like in your example %ADDRESS%.w where %ADDRESS% is the address variable and ".w" is the workername. the SCHEME depends on your pool. If you use ssl then just change to "stratum+ssl" otherwise it is fine. But I would remove the "START" because otherwise you are unable to see any error when the miner stops, because it will open a new window.