Just got a mail saying that the patch works perfectly with a 17" G5 iMac. It is driving the built-in screen at 1440X900 and a Dell 2001FP at 1600X1200. Have a look at this thread, is a great boon if you are using an iMac for video work the extra screen is so useful http://rutemoeller.com/mp/ibook/forum/viewtopic.php?t=296 Alex ---------------------------------------------- On 7 Nov 2004, at 23:50, Juan M wrote: > I think the iMac only does video mirroring.