You are going to have to edit you /etc/fstab file.
I believe you need to add:
to the options for the partition. For example:
notice the section where umask=000 is, that is where you need to add it in your file.Code:/dev/hda2 /mnt/win_c ntfs defaults,user,ro,umask=000 0 0
If you post the line from your /etc/fstab file for the NT partition I can show you exactly what it needs to be changed to.
Hope this helps.