So I tried searching microsoft and this site, and I couldn't find what I was looking for.

I remember seeing a post about a microsoft program that would automatically make the window of what ever program I was mousing over, my selected window. I.E. I am working on my main on 1 screen, then I move my mouse over to the other screen, and hover it over one of my slave's screens, and it automatically selects that screen as my new active window, so I can just click spells and what not, without having to click twice, once to make it my active screen, once to click the spell.