DVDGERMAN disc isn't playing game!

I’ve got a pretty complex problem (well i think so) see i burnt unreal tournament 2004 on a dvdgerman disc so i could install it an my other computer( so i wouldn’t have to go threw all six discs). Now it installs properlly but when i go to play the game with the disc it keeps telling me that i’ve put the wrong disc in and saying plz insert cd1, My question is how can I get the computer to read the file contaning the first discs data in it? :a