You will need a DP or Legacy twin or quad, or DPP twin without using an external switch. I wish you well with it - good luck! (:-) Look at the dish from the front and turn the LNB in a clockwise position say the 2 o'clock position - that should do the trick. Power on! You should be getting pictures - if not the LNB will need skewing round a bit. Remember to waterproof those LNB connections. When you have done that and the new LNB is place (don't tighten everything yet), connect your current length of cable to one output and the new length to the other (finger tight should be fine) and make sure BOTH of your boxes are connected. Power off everything! Remove the old LNB and to do this you'll notice a plastic rivet on the LNB arm of the dish which must be removed. If you are using a standard sky minidish you will need a 40mm adaptor kit, a dual output LNB and another length of satellite cable (Webro WF100 prefereably) but I suppose RG-6 will do the job providing it is not too long (around 10-15 meters or so) a couple of F connectors and self-amalgamating rubber tape.
A word of warning! Do not attempt to split any feed coming from a single output LNB to another satellite box - you will be asking for trouble!
