If you configure UAC to not switch to the secure desktop, you'll be able to
take a screenshot of the UAC prompt.

Run Secpol.msc as administrator, expand Local Policies, Security Options,
policy "User Account Control: Switch to the secure desktop when prompting
for elevation", set to "Disabled".

I'd recommend you revert the changes after you've taken the screenshots.

--
Regards,
Daniel Martín
Microsoft MVP Windows - Shell/User


"Gilles Ganault" <nospam@nospam.com> wrote in message
news:7k3ml3590e5b5avtokaoonslr7emsf6bqs@4ax.com...[color=blue]
> Hello
>
> I just installed Vista, and I need to take a screenshot of when an UAC
> window pop ups, but..
> - the usual PrintScreen or Alt+PrintScreen is disabled
> - using Vista's Snipping Tool doesn't work either (Its window, and
> hence the mouse, is no longer accessible when an UAC window is
> displayed).
>
> Is there a solution?
>
> Thank you.[/color]