Apologies is this topic is classed as taboo....

I currently have a S*y + box with a card that is freeview only.
I am interested in getting a VU+ duo box and unlocking all the other s*y channels. Is this possible and what do I need? I see people selling boxes that do this for huge amounts but want to try it myself.

Any tips and specifics is great help. Few years ago had a starview box for v1gr1n cable that was great and want to do the same for S*y sat channels

Thanks