Flash Presentation

Hello everyone,

I'm trying to design an animated presentation, which will be displayed on a ~30" monitor on a wall, something like those commercials in broadway NYC. My first question is would flash be ideal for this type of presentation? I knew flash quite a bit a couple of years ago, and learning new stuff right now. The second question is I need to get live screenshots (as big resolution as I can get) of certain websites for that presentation. Anyone knows how to get those in any way? Greatly appreciated for responses.