on cpu mining i use sphminer directory which uses sgminer.
"minerd.exe -a X11 -o stratum+tcp://stratum1.suchpool.pw:3325 -u myuser -p mypasswd -t (number here depends on how many cores you wanna use) -q"

so for a 4 core cpu -t 1 for 1 core or -t 4 for 4 cores or -t 3 to use 3 out of the 4 cores.

my 8 core is newer so i opted to use the PHCoin-cpuminer-1.3-avx-aes-windows-binaries directory and use minerd-aes-sse2-sss3.exe. i renamed the files and directory for easy typing...so likewise for a 8 core cpu -t 8 for all 8 cores or for me since i use my computer i just run 6 cores out of the eight my -t is -t 6

on gpu mining i use  the sgminer directory which users sgminer
"sgminer -k darkcoin -o stratum+tcp://stratum1.suchpool.pw:3325 -u myuser -p mypasswd --failover-only -o stratum+tcp://stratum2.suchpool.pw:3325 -u myuser -p mypasswd -I 13"    - change -I to a number for intensity i don't go over 18 and user 13 if you use the computer at same time.