Just ordered two imac 27" (1 i7 and 1 i5) mainly because i want two identical screens. However as the i5 will be used as the secondary display for the i7 which is great i feel i should be utilising the power of the machine not just the display. So my question is how would you utilise the i5 HD,Processor power etc. while using it as the secondary display? How would you use it and for what? I guess my usage would have to occur through screen sharing??? or is there a better method?