Like Sunner said. you can read ntfs, but don't write.
I believe write works for older verisons of NTFS, however if you have XP or 2000, I wouldn't think about writing to it.
You don't want to blow away your filesystem for a simple write.
There are tools you can use to read ext2/3 filesystems as well. So if you need to modify a NTFS file in linux, just copy the
file into ext2/3 modify the file. And when you get back to windows copy the file back from ext2/3 back to NTFS.
Its actually not really a plugin more a kernel module.