I have a VPN dialer application that was provided by my school that works flawlessly in a VM of Windows XP, but not at all with Vista Business. I can't tell what the problem is (of course Windows diagnoses it as 'no problem') other than it can't seem to acquire a port to communicate on. I'm not sure if this is an issue of Vista of Parallels, but since it works fine in virtual XP I'm leaning towards the idea that this is due to increased 'security' in Vista. Any help, suggestions, etc. are much appreciated. BTW - I tried using VIsta's built in VPN dialer, but that doesn't work either. J