Put your shadowfang on main hand and get blackvenom blade off hand
2x charged gear of agility
If you can get the agility version of your bracers, it would be better (gives a small amount of dodge) but its not that important
get gloomshroud and use peerless stats not glorious stats
glowing lizardscale cloak
Slither-Dog Headguard - Item - World of Warcraft is 13 agility, its 5 agility vs 11 stam 8 crit (I prefer 13 agility)
greater tiget claw inscription enchant to shoulders
get minor speed on boots (the 265 enchanting version)
get crusher on glove enchant and agility on bracer enchant
Use gift of versitality on neck/cloak/rings
EDIT: get troll bane's leggings with shadowleather leg armor
thats all
EDIT2: here's a very good rogue armory
Tapøut @ Bleeding Hollow - Community - World of Warcraft. He has head enchant on his loom head so I would still use the 13 agi head instead and his weapon and gloves are GFed so just use your gloves and shadowfang.