I realize that with the 27" screen, I have a lot of real estate. Well, I'm a real estate glutton. I have screens galore from former systems, and instead of letting them all go idle, I'd like to connect a 19" HP (not wide) flatscreen to my iMac. It happens to be the perfect size and aspect ratio for a document or a normally sized web page. I understand that I need a Thunderbolt to HDMI cable to do this. Anything else I should consider? Any drivers, cards, or pookas I need to think about? Anybody else as much as a real estate hog as I? Anybody else have multiple monitors on their iMac?