Comment 14 for bug 175689

this bug report is confusing several issues into one, and the initial poster mixed up uid and umask in a confusing way.

to summarise:
1)have uid of your user means you can share the folder without having to edit /etc/samba/smb.conf (or you could just share it running nautilus in root ie gksu nautilus).
2)having umask of 000 means computers on the network can actually access the share (the dialog about automatically changing permissions does not work as ntfs/vfat doesnt support individual file permissions, so if it wants to change permissions it has got to edit /etc/fstab which it doesnt know how to do).

i made a new bug report bug #255391, which pulls out one of the issues (the umask one) which at least endolith seems to be suffering from. this might be more useful