I figure the easiest way to get myself some digital signal is to pop a splitter on this, and run some cables.
I'm looking at http://www.freeviewshop.co.nz/satellite-terrestrial-splitter-p-55.html, along with a couple of cables (http://www.freeviewshop.co.nz/3ghz-quad-shield-flooded-satellite-cable-p-44.html).
Before I go ahead and do this, I want to make sure the current LNB will work, and confirm my assumptions about how things connect up are correct.
Here's a photo of the LNB. I can't quite make the writing out on it, other than it's Sharp branded.

Will the cable running into this have an F-Type connector already on it? I need a ladder to look closer, but if someone on here can tell me it'll make things a lot easier.
What I'm imagining will be needed is just to unscrew the existing cable from the LNB, screw on a new one, screw that to the splitter, and screw the original cable, along with the new one to the other side of the splitter. Run the cable up the wall and through my window, screw to the receiver, and I'll be sorted.
The alternative I guess is to cut the existing cable, and crimp two new plugs on it. Lots of extra effort, but if that needs to be done that should be fine.
Am I right? Am I better to buy a dual LNB?
I will most likely be using a Hauppauge card of some flavour, along with Vista MCE, and am located in Dunedin. DVB-T won't work for me I would imagine due to my location, so DVB-S is the plan.