Problem report with BitMinter

[lipefee]

Hi nice people. I am trying to mine with Bitminter but I am a completle ignorant computer science wise. I watched some videos and follow the steps. When I press the Engine start button I get this message: No devices to start! Please connect mining hardware to USB port(s) and use devices menu to probe for them. What could be wrong? I have a worker in my BitMinter website already.. thanks
Oh, I also have a Mac 10.6.8 which is kind of old. Could that be it ?

[goodhamh]

Click on the drivers that need to be installed.

Or have it search for them, its in the corner that most people fail to mention.