Trying to delet files

i need to delete some specific files off a cd. i cant because they're read only and when i try to change them from read only it says that access is denied (now keep in mind that im not very well computer educated, so if this is the natural behavior of a cd, dont laugh at me) so ah, yeh, any suggestions?

>>3
this is probably the only course of action that will work for you, OP