Thank you!
I know, and im thinking of selling the imac and getting a new Mac Mini.
Aye, it a Mtable i used with for my old setup Cinema display and 17 mbp.
http://www.xtand.net/mtable.html
it sounds like you have 1 apple cinema display and 1 thunderbolt display. even if you had a mini it would be difficult to set up both monitors because you cant chain the cinema off the atd and the hdmi output wont output a high enough res for the apple cinema display.