found this info from: http://www.macosxhints.com/article.php?story=20090913140023382
get the uuid from:
diskutil info /Volumes/volume_name
sudo vim /etc/fstab
enter
UUID=123-456-789 none ntfs rw
replace the uuid with the one from the diskutil
this will work with bootcamp’s partition only if you did not use win7’s installer to repartition the drive.
also when removing the windows bootcamp. you need to use the win7 installer disk and remove the windows partition as well as possibly the bootup system partition. mac’s bootcamp assistant will not be able to remove the windows system partition for one reason or another. this would result in having to reformat the mac to rectify the issue.