I am using this miner, it is very easy, but the Threads doesn't work on my windows 7. it starts 8 no matter what I try.
I had a similiar problem:
bug#0002:
thread = 1 is ignored, instead it starts with 2 threads.
Which is bad in my case, because 2 threads are stealing ~100 khash from my GPU miner on that machine, while 1 thread on CPUminerd.exe costs only 6-10 khash of the GPU mining power. So I personally need to wait for the repaired version of the miner before I use it.
I guess the threads selection of the GUI is not properly connected to minerd.