Thanks, busta, for your detailed answer. I am already mining on roi.suprnova.cc pool. There is no problem.
But my question is how to start mining on cluster roi.hopto.org?
Thanks, cryptoil, I will try
You better stick to pool mining, need a lot of luck for cluster mining. I already tried it twice for 24 hrs with average hash rate of 1000kh and still no luck to find a block. im getting 160 to 180 coins per day with that hash rate.