p2pool! http://qb.zcoins.org:9764
Use:
minerd -a quark -o http://qb.zcoins.org:9764 -u YOU_WALLET_ADDRESS

Windows (x64):
- download and unpack archive: http://zcoins.org/quark-v2_w64.zip
- add in file !QB.bat your wallet address
- start !QB.bat

Lunux (Ubuntu 13.04):
wget http://zcoins.org/installQB
chmod +x installQB
./installQB
add in file startminerQB.sh your wallet address
./startminerQB.sh