I give up... It works with Vista as a Host and XP as Client in VMWARE6 after turning of the firewall of Vista. I can see it jump from HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\usbccgp to HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\USB
on the XP VMWARE session, but it doesn't do so on Vista. I can't find any access denied events, it just won't go further then that. All three USB devices (HUB,HID,STORAGE) appear to be correctly installed.

So for now VMWARE6 and turning of the firewall will give you a working ProntoEdit Pro on Vista. We probably have to wait for Philips for an update to get it directly working in Vista.