source :
http://www.anandtech.com/guides/viewfaq.html?i=121
Medium Answer:
All modern Linux kernels (all 2.4.x and many 2.2.x) DO support NTFS in read-only mode.
Long Answer:
Although you can read NTFS partitions created with any version of Windows NT, you can not WRITE to an NTFS partition created with Windows 2000, XP, or anything yet to come. NTFS partitions created with Windows NT 4.0 and earlier CAN be written to, but this tends to make a mess of the file system, so make sure to do a chkdsk when you boot into NT after writing from Linux.
Below are in-depth instructions on how to gain access to your NTFS partition from Linux.
To access your NTFS partition:
Open a shell if you haven't already.
Become root. Do this by running su and entering your root password when prompted.
Create a mount point for the NTFS partition. mkdir /mnt/ntfs
Mount your NTFS partition. mount -t ntfs -o umask=644 /dev/device /mnt/ntfs
Replace device with the name of your NTFS partition. See below for advice on how to find this if you don't know.
The contents of the NTFS partition is now part of your tree. When you want to access a file on it, just think of /mnt/ntfs as C:\ and you're all set.
When you are done, repeat steps 1 and 2 (if you exited the shell) and run umount /mnt/ntfs
If you want all that to be done automatically when you boot Linux (doesn't take effect until you reboot of course):
Open a shell and become root as described before.
Open your fstab file. kedit /etc/fstab
Note that this assumes you have KEdit (part of the kdeapps package) installed. If you don't, replace kedit with vim, xemacs, gnotepad, or whatever text editor you like.
Add this line somewhere in the file:
/dev/device /mnt/ntfs ntfs umask=000 0 0
Save and exit.
Note that you have to make sure the directory /mnt/ntfs exists before you reboot, or else it just won't work.
To figure out what device your NTFS partition is:
What kind of hard drive is it on?
If it's on an internal IDE drive, it will be HDxy
If it's on a SCSI drive, or a pen drive, or an IDE drive hooked up to USB or FireWire, or any number of bizarre methods, it will be SDxy
Which device letter (x) is it?
IDE drives will be A for primary master, B, for primary slave, C for secondary master, and so on.
SCSI and other drives will be A for the first detected, B for second, and so on.
If that doesn't help, run dmesg | less and look through it for clues.
Which partition number (y) is it?
The first partition on the disk will be 1, and the second will be 2, and so on.
So if it's the second partition on your primary master IDE drive, the device is HDA2
If you get an error about NTFS not being supported by your kernel, the first thing you should try is to install the NTFS kernel module:
Open a shell and become root.
Install the module. modprobe ntfs
If no errors, try mounting again. If you do get an error, you might have to build yourself a new kernel.