Please help me set up my a sic cubes for my mac. I tried to connect them directly to my mac but bit minter won't read them.
What type of cubes ? If you are talking about ASICminer 38gh/s Cube, than you needed a stratum proxy or using bfgminer acting as a stratum proxy.
Bitminter won't recognise those ASIC Cube. You might want to follow the link for OSX to install bfgminer.
http://blog.nwoolls.com/2013/04/24/bitcoin-mining-on-mac-os-x-cgminer-bfgminer/Than to run bfgminer as a stratum proxy:
just issues at the Terminal "bfgminer --http-port 8332" to start bfgminer stratum proxy.