Like I said, Bendrig, the woodsman needs a bit of tweaking to be acceptable for a D&D game.
For example, the saves SUCK. That's because WoT uses the intermediate save mechanic, starting at +1 and ending up at +9 at level 20 (which I think D&D should have had, BTW).
Also, all classes in WoT have more skill points. The Armsman has the least with 4. So the Woodsman's 6 (IIRC) is maybe a bit much (YMMV).
The Nature's Warrior ability is VASTLY superior to favoured enemy, which I never really liked anyway. A ranger should be able to fight better in the land which he guards, not against a specific enemy. That makes him more of a specialty hunter or assassin than anything else.
And the woodsman is not limited to forests, either, since you get many terrain choices, and more later on. It's easier to make a Dwarven underground ranger using that system.
Partial Improved Initiative is good, but doesn't make the class as top-heavy as the two-weapon fighting feats. All in all, the class just seems better balanced.
As for FFG's book, does anyone know what it's called?