I just bought an older 20" ACD off ebay (this model). It comes with the power supply, monitor, and stand but not the DVI cable. It doesn't look like I can use a standard DVI cable, right? So I think I need to find the specific cable (the combined FW/USB/DVI) for this monitor but I'm not sure where to look and I can't seem to find them on eBay. Any suggestions?