http://www.wowarmory.com/character-sheet.xml?r=Korialstrasz&n=Darkvamp-after upcoming patch for HB to lose the Cooldown-Current Rotation PS - IT - P - HB - BB (PlagueStrike - Icy Touch - Pestilence - Howling Blast - Blood Boil)
This gets your diseases onto every mob and hits em with a lil aoe and creates 1 Deathrune.
Follow that with a rotation of HB - HB -BB. This creates the 2nd Deathrune. (BB may come before the 2nd HB as soon as my blood is up i hit BB to make the DR). after that I can generally hit 1 more HB before renewing diseases.
I usually cast Bone Armor before a pull so as to keep runes free for rotations. Use Runic power for Icebound Fortitude when needed and Rune Strike.
Defensive Abilities Cap:Defense rating of 689 (540 Defense) This is Raiding quality Defense. Heroics take roughly 530 Defense and you can get by without it maxed on 5-mans.
Armor should be above 20k unbuffed in frost presence. More is better.
Hit Points should be above 20k unbuffed in frost presence. More is better.
Dodge Rating + Parry Rating should be above 30% avoidance when added together.
Hit Rating for DW is a whopping 918 Rating. To get 0 miss chance
Expertise Rating for DW is 492 to be unparriable.
Conversions: Expertise rating 32.79 = -1% dodge/parry
Melee Hit Rating 32.79 = 1% hit
Spell Hit Rating 26.23 = 1% hit
Crit Rating 45.91 = 1% Crit
Haste Rating 32.79 = 1% Haste
Armor Penetration Rating 15.4 = 1% Armor Ignored