Faninka,
You can put a TV card in your PC and link the RF (Link) from your master Beovision to the aerial of the TV card and PROVIDED you have at least one other link room or a Beolink Passive you can watch the TV on your PC without the Beoport.
However, you will only be able to change channel and other functions via the other link room or via a Beolink Passive IR in the PC room and the functions of Beoplayer will remain limited to the PC.