That's the one, bottom left, 4 hoses. In theory you should be able to just undo the screws on the top and then move the lot out the way. Replace the paper element and put it all back. However, it would probably be easier to pop the hoses off too, they are easily released little spring clips.
Once it's all back together, as Horne said, turn the engine over, it won't fire immediately as the filter will need to fill, oh and it might be worth getting some millers diesel additive as well, just to give it that little extra clean through the bits you cannot reach.