bought sims2 for mac and it wont open

my boyfriend and i just bought the sims 2 and i tried installing it but it wont work.
i put the disc in, opened it and it said to drag the file.
i draged it where it told me to and it loaded it to the mac but afterwards i opened the sims file and went to start the program and it flashes like its going to open but then disappears. none of the other files will open either ( the read me). im so pissed off because i really want to play the sims

so if anyone has any idea what i can do please help