I have been playing around with Vista for a few days now and my conclusion is that there's still a bunch of software I almost cannot live without that still would not run properly on Vista.
I was googling around and found this :
For more information on Microsoft downgrade rights, please visit the following URL:
I have not had a chance to call the Laptop manufacturers to find out how many arms and legs do they want.
One issue of downgrading a new Vista based laptop is to make sure you can obtain the right drivers for the hardware.