Although this thread is some five years old I still would like to add my comment to it.
I just set up an out the box Acer X223W 22" TFT LCD monitor on a PC running under W7Pro-SP1(64bit) and discovered that in "Devices and Printers" the monitor is shown as X223W but in the Device Manager it is simply set up as a Generic PnP Monitor with MS driver 6.1.7601.23403 2006-06-21 and of course the OS can not find an updated driver and Acer never supplied a 64bit driver for this monitor. Bottom line just eat what we feed you and stop complaining about the OEMs total lack of interest in the customers, they are after all "consumer" products and meant not to get support after they have been bought and the "warranty" is up.