Claymore's Miner

You can find Claymore's miner download links and documentation here
Extract archive to a folder.
Then create a start.bat file in miner's directory.

C:\\Claymore's Miner\start.bat

setx GPU_FORCE_64BIT_PTR 0 setx GPU_MAX_HEAP_SIZE 100 setx GPU_USE_SYNC_OBJECTS 1 setx GPU_MAX_ALLOC_PERCENT 100 setx GPU_SINGLE_ALLOC_PERCENT 100 EthDcrMiner64.exe -epool -ewal <Your_Ethereum Classic_Address> -eworker <RigName> -epsw x -allcoins
Then you can start mining by clicking on start.bat file or running it from cmd.