Sorry mate, bit strange it says so on the page
Saw this on the dell forums:
to install the drivers you can't use the software installer included on the cd. You have to do it manually. follow these instructions to manually update the driver.
-right click on my computer and choose properties
-then click on the hardware tab
-then click on device manager
-expand monitors
-should say Plug and Play monitor
-right click on it and choose update driver
-Say "not this time"
-click next
-choose install from a specific location
-check include this location in the search
-and in the location bar choose the cd rom with the driver on it
-click next and it should find and install the driver automatically
I'm interested in this as well as I'm going to be running my 2007 off Vista x64 primarily