http://blogs.technet.com/windowsvista/archive/2006/09/12/455700.aspxI know you've been there: you're giving a presentation and, having previously left a Windows Messenger window open, up pops a messages from one of your buddies. You lose both your audience and your train of thought. Not a comfortable place to be, especiallyCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.technet.com/windowsvista/archive/2006/09/12/455700.aspx#455791Wed, 13 Sep 2006 10:31:05 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:455791Lasse2002I usually like to run presentations on the second monitor of my system. This successfully prevents interruptions like this. A new problem in Vista is when an application needs admin rights. A dialog box will come up and *both* screens will be darkened. Would it be possible to darken only the first monitor so that the presentation monitor will not be darkened until I have entered the password and clicked OK?http://blogs.technet.com/windowsvista/archive/2006/09/12/455700.aspx#455903Wed, 13 Sep 2006 18:02:07 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:455903Spyware SucksNick White says: " I know you've been there: you're giving a presentation and, having previouslyhttp://blogs.technet.com/windowsvista/archive/2006/09/12/455700.aspx#457150Mon, 18 Sep 2006 08:04:19 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:457150Nick WhiteHey Lasse2002:  it's the entire OS that "goes dark" when the UAC prompt appears, as the OS locks out/freezes all active processes until the user responds to the prompt.  Consequently, there's no way to discriminate between displays.