Windows 2008 virtio drivers?

It wasn't a problem with driver signing - in 64 bit Windows 2008, the device was "broken", according to Windows.

Could be that the drivers in that link would behave better - I have no way to try anymore, since I have a 32 bit version running already and it's enough for me.
 
i'm using virtio with 2008 x64
it didn't work at the beginning, until I upgraded to 2.6.32