Leveling dual wield is fine. As for talents -
-Fury-
Cruelty is a must.
Unbridled wrath is nice, but Imp demo shout is useful as well.
Blood Craze, nice for low down time between fights.
Duel wild spec, not as great as some other talents, but better than most, shouldn't be necessary, but putting points in it wont hurt.
Enrage is a must.
Sweeping strikes is a must.
Weapon mastery is very nice.
Flurry is a must.
Bloodthirst is a must.
Precision is a must.
Imp berserker stance is not needed until you start doing groups where your not getting hit.
Rampage is more of a raid buff, but it's still a very nice dps boost.
-Arms-
Deflection for leveling is great
Imp T.clap is great for that tier of points spent.
Imp heroic strike is good, while duel wielding you'll only have a few skill based attacks.
Imp charge is nice for leveling or grinding, but generally you'll have other points to spend elsewhere.
Deep wounds is nice for leveling, but it's better as you gain levels
Imp overpower is nice for leveling, once you have flurry.
Impale is not as great for leveling, but it's still better than other options in arms.
Deathwish is overall a nice thing to have. Extra fear break (any stance) extra spike dps, more incoming damage. Take it or leave it, it's generally a nice thing to have.
That's about as far as I'd go in arms while duel wielding. While weapon specs are nice, they don't do duel wield great justice. While leveling you'll probably be changing gear every few levels or so. Don't worry about what type of weapon, just stick the highest dps weapon in your Main Hand, and the lower DPS in the Off Hand. If they are the same dps, the slower one goes in the Main Hand.
Edited, Jul 22nd 2008 12:58pm by devioususer