Rock band with mac problems!

I am trying to hook up my Portable rock band drum kit to my mac but my computer is having trouble recognizing it. I have looked every where, and everyone says to install the driver on tattiebogle.net. so I did that. I restart my computer, go to system prefrences and plug my portable rock band drum kit in...... and nothing will come up. I don't know what to do. Is it just because I have the "portable" drum kit? did I happen to download the wrong driver? I have worked on this for a week now and I still can't get it to work.. Any suggestions?!?!?