Hi All, I have a macbook thats a couple of years old now. I got the flashing question mark on startup and have just about exhausted my options. I'm looking to replace the hard drive, currently it's a: Toshiba MK6034GSX 60gb (http://shopper.cnet.com/internal-hard-drives/toshiba-mk6034gsx-hard-drive/4014-9998_9-31876515.html) Unfortunately I cannot find anywhere that will ship to Australia. Does anyone know if I can replace the HD with a newer model of the toshiba and if so, any suggestions for more widely available models? Thanks in advance.