Question stated in the post title. I have a 24" and need to get another monitor. For whatever reason, Apple decided to make there display 23" instead of 24" so I'm less tempted to get that, but still considering it. Is it possible to rotate the 23" display and make it vertical instead of horizontal? I was wanting the 30" to go beside it but have been informed that the Apple 30" is not compatible with the iMac. Is there any workaround with this? If not, is there ANY 30" that would work for me? If I was to get a non-Apple 24" monitor, would it be even planed with my iMac 24"? Would it be the same height and everything? Preferably, I'd like one with similar height/size. Is there anything else I would need to purchase in order to have dual monitors? Exactly what cord would I need? Anything else?