ty for help guys ! Second questions here if i want to use my (2)S3 to mine altcoin !? What coin is the most profitable !
You wont want to. They mine SHA256 and bitcoin is pretty much always the most profitable, there have not been any good coin releases on it for a while.
Most altcoins that are worth something are scrypt. So you need a entirely different miner then your S3. So you would be better off mining S3 on BTC and buying altcoins, then trying a SHA256 altcoin I think.