There are no tabs ! We are talking about a FILE named fstab. More precisely, /etc/fstab.
If you don't understand the concepts we're talking about here, it's not safe to try to do it yourself.
This is unix hacking, is not officially supported by Apple and could potentially be desastrous for your pristine Mac...
I have stopped using this myself, as it was too unstable and not worth risking over 2TB of data for me. I switched back my kernel to 32 bits (was running full 64 bits before) and installed the beta version of Paragon NTFS for Snow Leopard (which needed a 32 bits kernel) for a test drive. It's working much better than the fstab hack, allows me to Repair my drives and format them in NTFS which wasn't possible with the hack.
So I'd wait for the final version of Paragon NTFS for Snow Leopard, due end of september, and get myself a copy. Although it's more expensive than Snow Leopard itself, if you have any valuable data on NTFS drives, I'm quite sure it's worth it...