It's abilities, as I recall, would carry over over fairly easily into 3.5, except one of it's abilities was to subtract 10% from concealment every 3 levels. You could change that to bonuses vs. cover and eventually into improved precise shot. Just keep in mind that some spells *cough*Hunter's Mercy*cough* make the class broken, since it can take the crit multiplier on a longbow up to X5. I've played one, I didn't find them that overpowered (especially now since keen and improved critical don't stack)