If you haven't seen it already check out this link: http://www.macparts.de/ibook/ Now if the iBook can do it with a driver tweak, maybe the iMac can too? This has been a HUGE limitation for the iMac (search Apple's FP Imac display forums if you don't believe me) There is a demand for this. If anybody can get this to work on an iMac, I'm going to go get one as soon as I can afford it. -thanks P.S. this is also featured in the FP Imac display forums and the iBook (dual usb) display forums too.