Thanks for the replys. One more question. the reason I bought this HD was because the HD that was in there seemed to be failing. I got the screw driver put the bracket thing on the new one, I boot up and still the HD is not seen in the disk utility. Do you think it might be the SATA cable or is it probrably something wrong with the logic board?
I already tried setting the jumper so that it's setting is at 150 instead of 300.