Or don't worry about the Share permissions. If a user has FULL permission on the share but NO permissions on NTFS they can't read/write/traverse or anything. They basically have access denied.

In my opinion the permissions on Shares is a hold over from Windows 9x which has no ACL (Access Control List) on FAT16 or FAT32

As the other post I linked to showed, just set the correct NTFS permissions as part of the whole thing.