if your kernel is 2.4.x then goto
sourceforge.net/projects/linux-ntfs/
and download that patch .
After that edit your /etc/fstab and make entry for that partiton. ie.
/dev/hda2 /mnt/windows ro,umask=0222,users 0 0
Replace /dev/hda2 with actual partition and /mnt/windows with actual mountpoint.