DPS warrior is still one of the easiest builds to pull off.
First I would focus Strength (Attack Power) and Agility (Initiative). Your third attribute focus could be anything, but I would suggest Prescence (Leadership and Health).
For Powers I would take
Recharge: Power Wave or Holy Shock
Recharge: Cleave
Ultimate: Unbreakable (I know its not a dps power, but I still consider it the best ultimate)
Thats about it. Go ahead and choose which at-will and encounter power you want.
As for weapons, you either need to go two-handed or dual wield. Spiraled sword is a good twohanded that you can get early. Santified Gladius is a good dual wieldable weapon you can get early. You might consider getting the dawnsword for its deflection power. If you want to be really spicy then you can get flames within encounter power, but then you would need to boost up fire resistance.
Remember, no build is great at all situations.
Wyvern Ignition is NPC exclusive, sorry