How to mount Windows partitions (NTFS) manually, and allow all users to read only

# mount /dev/hda1 /media/windows/ -t ntfs -o nls=utf8,umask=0222

/dev/hda1 is a parition in /dev/hda disk device. To see the list of available partitions of the specified disk device, run this command:

# fdisk -l <device>

The device can be, for example, /dev/hda, /dev/hdb, /dev/hdc, /dev/sda, /dev/sdb, etc
I tested this on Ubuntu 8.04 Server Edition.