ZoneScreen 'pode' funcionar com o Vista se você seguir a solução publicada em seu website .
Windows Vista and Windows 7 Limitations
These operating systems have two important limitations affecting ZoneScreen display driver. First, due to Windows Display Driver Model (WDDM) architecture, ZoneScreen virtual display driver can't run unless leagcy XP drivers are installed on main video adapter. Also, for Windows Vista x64 and Windows 7 x64 digital signature enforcement for kernel drivers is also applied (ZoneScreen driver do have authenticode signature but appropriate digital certificate costs a lot). So, virtual display driver is not loaded unless this enforcement is disabled.