Nec 3520a does not read all my cd files

I have a samsung dvd rom and a nec 3520a dvd writer installed on my pc.
When I place a cd which has files on it copied with nero. In the samsung dvd rom I can see all the files. When I place the cd in the Nec 3520a It only sees 1 file all the rest are invisible.
What could be the problem??
Also If the cd is in the nec 3520a and I go into nero burning dvd, it sees all the files on the cd.
Therefore it is only in My Computer that I can not see the files. I have Windows XP pro as my operation system