kernel mode drivers in windows vista

[rookie1010]

Hello
in the wiki for Kernel Mode Driver Framework, i came across the following
In general, because more features like Power Management and Plug and Play are handled by the framework, a WDF driver will be less complicated and have less code than an equivalent WDM driver.
does this mean that there is no PnP and ACPI driver in windows vista, but the KMDF framework somehow handles PnP and power management?

Does Windows driver model only have user mode drivers, since KMDF suports kernel mode drivers.
or is it the case that there are two ways of writing a kernel mode driver in windows 2000, using the WDF or the KMDF 1.1?

Is the KMDF unchanged from windows xp into windows vista?
Did UMDF then just replace WDM?


i would really appreciate any answers to any of the questions, i am trying to figure out how to port a windows xp driver to work with windows vista, and i think i have figured out how big a challenge it is