me dumb ass

[engagedata]

ok peeps im new to all this im trying to connect my desktop to d box,got the magic files,im a little confused here,i think ave got an rg45 lead i got it from my router a blue cable tht was connected to my wireless router,the thing is ive got a desktop pc and its miles away from telly and dbox,do i need to have the cable connection comeing in from street left into my dbox,and rj45 lead connected to my dbox and my pc, cause i tried doing wot red arrows said in tut ,told ya am a dumb ass