I bought a 40gb ps3 and i would like to upgrade the hard drive to atleast 160gb. I tried the western digital notebook 2.5 sata 5400rpm 160gb but it didnt work it ,it mounts an the braket but wont slide all the way in to the ps3..for some reason the connection is not the same.. Is there another one i should try? If it could be done with the 40gb, which hard drive is recommeded to use?? thanx