I'm purchasing a 18.1" LCD monitor. When I opened the box to look to make sure it was Mac compatible. In the instructions it said: PC's could get 1280x1024, but on a Mac only 1024x768. Why would this be? The monitor is such a great deal, that I can deal with 1024x768, because I use a G3 iMac now, so anything is an improvement. It's a Microcteck 18.1 LCD for $400 from Walmart.