PvE/PvP Warlock Spec?

[Nothing]

Hey, so I've played Rogue and Warrior too much now and I'm rolling over to an Undead Warlock! I know literally nothing regarding this class so I wanted to pop a question to some knowledgeable Warlocks! I'll mostly be doing PvE but I'd also like to PvP in my downtime between raids etc. If someone who knows a lot about the class could show me a good talent spec I'd appreciate it!

[Lifealert]

Sm ruin and sm ruin only