Read/write NTFS partition under Mac OS X Snow Leopard

By default Mac OS X mounts NTFS partitions in read only, here is how to make them read/write (this is experimental - at your risk). This only works under Snow Leopard, not Lion.

Get the partition "BSD Name" from the System Profiler (About This Mac menu), it should be something like disk0s1.
Inside a terminal:

mkdir /Volumes/MyPartition
sudo mount_ntfs -o rw /dev/disk0s1 /Volumes/MyPartition

To make it permanent, get the "Volume UUID" using:

diskutil info /Volumes/MyPartition

And then write to file /etc/fstab

sudo sh -c "echo UUID=FCA56B30-C9BF-44A3-81CC-A4BB5D2C1F4D none ntfs rw > /etc/fstab"

At restart the NTFS partition will be read/write.