I'm using windows 7 ultimate 64-bit
setx GPU_MAX_ALLOC_PERCENT 200
setx GPU_USE_SYNC_OBJECTS 1
color 0A
sgminer.exe --kernel darkcoin -o stratum+tcp://stratum1.suchpool.pw:3335 -u u -p x -g 2 -w 256 --lookup-gap 2 --thread-concurrency 8192 --shaders 2048