Any computer experts?

I'll be on a budget for sure. I would like to keep it under $1,000. I will probably start collecting parts in a month or two and it will probably take me that long to purchase everything I need.

It will be primarily for WoW, I don't need it set up for high end raiding, just casual gameplay and PvP arenas for end game. Of course standard internet usage thrown in.

One thing I'm interested in doing is being able to use my TV (52" Sony Bravia) as a monitor on certain occasions.

Any help would be appreciated, I have Tom's open in another tab as a I type this.