Please help - having trouble with dj v3

So far i have made over 10 coasters
Im trying to copy copied dc games
only two i have got to work have been vtennis and vstriker2
the rest write data to the blank cd ( i can see on the under side of the cd )
but when i put em in my dc they just load to the music screen
HOW can i get get djv3 to work??
can someone please explain to me exactly what to do in laymen terms.
thanks heeps