Hi,
since I bought my MacBook Alu last october, I knew I wanted to replace the harddisk with something faster and bigger.
In January, I searched for a replacement and found the 500 GB Seagate Momentus 7200.4 (ST9500420AS), which I bought at one of the webshops here in the Netherlands. Unfortunattely, 2 months later, I still had not received it. Backorder, they told me. So I cancelled the order, and tried again last week. This time my luck had changed, and the disk was available for shipment, and it arrived yesterday.
Time to replace the drive. I used the tutorial on Macinstruct. So, I hooked up the new drive to my MacBook using a Conceptronic USB to SATA controller and used SuperDuper! to backup my files to the new drive. After an hour, that was done and I rebooted my MacBook to confirm that I was able to boot from the new disk. Worked like a charm 
Last taks was to backup my Win7 partition. I used WinClone to back up this BootCamp partition to another disk.
After swapping the old internal disk with the new one, I was able to boot from the new disk without issues. I created a BootCamp partition of 250 GB and used WinClone to restore the image.
Now I’m happily running Win7 on my MacBook with a brand new 500GB 7200.4 drive
