I have great news for everyone!
Tested on Vista 5231
I cannot be sure on this but it does apear that Microsoft no longer requires the drivers for any hardware to be digitally signed by them. This is a great relief to me and I'm sure to many others.
The warning on digitally signed drivers is removed
On the downside you still need a 64 meg video card to get transparencies.
As a suprise to many MS did include P2P but it is not funtional nore can it be installed through the Windows components.
It is shown but not funtional
There is no option to install P2P