I just bought a nice 30" Cinema Display as the second monitor for my 2007-2009 aluminum 24" iMac, and the Cinema Display came with the Mini DisplayPort to Dual-Link DVI Adapter, but the problem is that my iMac has the plain DVI and not the Dual-Link port. I found a Mini DisplayPort to DVI adapter but the resolution is awful, I need a DVI to Dual-Link DVI adapter, but there doesn't seem to be one out there. Any workarounds? Am I missing something?