I just picked up a new iMac, 24 inch monitor. After working on it for 2 hours, I realized that the hieght of the screen is too high and I am not ergonomically correct. Standing in the store, it worked fine, the right hieght. Is it just me that it is set up too tall? What have others experienced with these larger monitors? Othr suggestions?? I have adjusted my chair up, but it still seems a strain.