RE: My first attempt at GPU mining (ETH)

Download ethminer-0.11.0-Windows.zip from https://github.com/ethereum-mining/ethminer/releases

then create bat file inside folder with ethminer.exe with settings, here is example

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
ethminer.exe --farm-recheck 200 -G -S eu1.ethermine.org:4444 -FS us1.ethermine.org:4444 -O (Your_Ethereum_Address).(RigName)

farm recheck can be changed to 2000, -g is for open cl, -u for cuda mining
your pool instead of

-S eu1.ethermine.org:4444 -FS us1.ethermine.org:4444

Here is a guide if you need http://zeronumbers.com/node/32

Note that this miner will crash at some point and mining will stop so you need a way to restart it either bat file or a program that will watch miner and restart it in case of error.
Here is what I use: https://github.com/orkblutt/MinerLamp
Here is alternative: https://github.com/derubm/Ethminer_Watchdog