i have a digi vox set top and also have a tv link. I am trying to connect up two t.vs in different rooms. I have got the cable from one room to the next and i have a picture and sound but the only problem in which i have is that i can not change channels through the tv link. wondering if there is anything i can do to enable me to change channels through the T.V Link? Any ideas. Any help would be muchly appreciated and i thank you in advance.