14 Expertise
12 Wilderness
The rest in to Marksmanship
Use runes with this build.
Your skills are.
Quick Shot
Dual Shot
Distracting Shot
Favorable Winds/Winnowing
Barbed Trap
Kindle Arrows
Drain Enchantment/Pin Down
Hex Breaker
Why 14 expertise? To clock dual shot down to 4 energy.
Why Hex breaker? Because the skill that ruins your entire build is diversion.
Why barbed trap? Because with 3 people on your team running it, it's a great anti warrior skill. I suggest having someone on your team run ward against foes as 3 barbed traps + ward against foes is the ultimate warrior counter.
You run favorable winds, and another person running the same build runs winnowing. You have three rangers on your team just like this. A necromancer running order of the vampire, or order of pain constantly whenever you're in battle.
You attack low armors first, then high armors once you don't have to worry about them healing or hexing you. Kill any spirits that aren't helping you. Take down greater conflag the second you see it as it's taking away 19 damage per shot because you don't gain a bonus from order of the vampire and winnowing.
If you're not going to run pin down, which is probably best because it kind of ruins the entire mana flow of your build. run drain enchantment instead as it costs you 0 mana and only has a 1 second cast. Have someone else bring some snares if you're not going to bring in pin down.
You do about 79 damage a quick shot, about 140 on dual shots.
Picture of it being calced out is here.
http://gujumafia1.com/Hunnybunny/rangerpoon.gif
Things to watch out for, guardian is the counter to your entire build, have someone bring in rigor mortis or kill your target quickly once you disenchant him.
m

.
(yeah I couldn't resist the temptation..)