thank you for your answers.
i have downloaded cgminer 3.7.0
i have extracted this archive, i have added a startmining.bat file with the following text
"cgminer --scrypt -o stratum+tcp://pool.testserverino.de:3333 -u logn.workrlogn -p password" with usernames and passwords, and now if I click on startmining.bat , a black window appears that i have simply started cgminer 3.7.0, and nothing happens next