i have the following Esq. 1dish 500 ,2dual dish lNB ,3receivers no. 301,4000,3000.and DP34 switch and (2)SW21 switches.I am currently using the 2 DP21 and 2 duall NB,with receivers no. 301and 4000. how do i hook up the DP34 switch with 3 receivers?. thanks Harley4710