Turns out my graphics card can only handle a maximum of 2 monitors, I was mislead by the fact it has 3 ports at the back.
So while I've got my shiny new 22" there's a monitor next to it just sitting there, not doing anything.
I don't really need 3 monitors, but it'd be nice, and probably useful somehow. So I'm considering buying another graphics card, nothing too expensive, I just want something that can display pictures, so it'll be quite cheap. But then I shall have the power of 3 monitors while coding! Bwahahahaha.