I don't think you can use *NIX style permissions with NTFS.
But you might be able to set global permissions for the entire partition? maybe? If you can, then you'd have to mount the device and set your permissions up through the mount.
mount /dev/hda1 /mnt/win_partition
chmod 555 /mnt/win_partition
If this is something you want to do on a normal basis you may want to make an "auto" entry into your fstab (man fstab
for more info).
Now if my assumption is correct, you are trying to check out a Windows NTFS partition in Linux. I believe NTFS is a journaling filesystem and I'm not sure how happy it would be if you messed around too much with the files while it was down. It may not matter, or Linux may have the ability to keep up with the housekeeping. I honestly don't know... personally I've used a FAT32 shared partition in the past as a go-between.