Install the latest OSXFUSE http://osxfuse.github.com/. This will only mount NTFS but you can’t write to the drive yet.
Next in the terminal install ntfs-3g driver. Prior that, you need to link the fuse4x first, in the terminal
$brew link fuse4x $brew install ntfs-3g $sudo cp -rfX /usr/local/Cellar/fuse4x-kext/0.9.1/Library/Extensions/fuse4x.kext /Library/Extensions $sudo chmod +s /Library/Extensions/fuse4x.kext/Support/load_fuse4x
To replace the default Mac OSX automounter:
$sudo mv /sbin/mount_ntfs /sbin/mount_ntfs.orig $sudo ln -s /usr/local/Cellar/ntfs-3g/2012.1.15/sbin/mount_ntfs /sbin/mount_ntfs
