I recently upgraded my main system to Windows 7 and was somewhat annoyed to find that my Samsung ML-4500 does not have Windows 7 drivers for the 64bit version. I figured that the Vista 64 bit drivers might work and indeed they do, but there is a catch - the executable installer file refuses to run. So to get them working you need to do the following:
Hope that helps a few of you using these great little printers.