Installing Tribunal Add On

I have just completed morrowind which had me proper addicted to it and I have got Tribunal from kazza but it won't install, it keeps saying I have to have Morrowind installed won't it worked from Morrowind from Kazza :angry:

if either or both are .exe games then you cant put addon packs onto .exe games, you will need the proper cdimage of the game and the add on for it to work properly.

Thanks for reply, how do I know if its a .exe complete beginner and how do I download a bit torrent file then and what is one :unsure: