Thank you for your answer.
Ive ben trying a lot now and it will not work. Im not sure where im wrong. Im using the EWBF'S miner with this command line:
miner --server stratum+tcp://kmd.suprnova.cc:6250 --user Astasu.Astasu --pass x
The window is closing right after it startet it. Where lies my mistake?
Please help me out. thanks