Q: I have an old 30" apple cinema display (2005) I want to use as a 2nd monitor to a new iMac (2012).  I don't just want mirror image of iMac; what's the best way to do this?

I have not bought the iMac yet but will do so very soon and just want to make sure I have what I need to get everything setup including adding the old faithful 2005 30" cinema display.  Currently I am driving the old 30" cinema display with a macbook pro also purchased 2005 and happy to say I got a lot of good miles out of this rig.  What's the best way to connect the old 30" monitor as a second display for the new generation iMacs?

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