Hi all. I currently have an iMac 2 GHz, Intel Core 2 Duo, 1GB 667 MHz DDR2 SDRAM running 10.6.7. I just bought/upgraded to a new 21.5 2.8GHz Quad-Core Intel Core i7, 4GB. My plan was to use my current/soon-to-be old iMac as a dual monitor/second display for the new 21.5 iMac. I've done a lot of searching but the only way I'm finding to set the iMac up as a dual monitor is with a PC monitor, which is no good for me (or two 27 inch iMacs, which is also no good, obviously). Is there really no way to set up two iMac's as dual monitors? This seems crazy. I'm just an amateur user and not extremely knowledgable, so I thought maybe I missed something in my search or didn't understand exactly what I was reading. Any thoughts/info to provide? Appreciate the help. Thanks.