Good afternoon! I'm hoping you can help out. I want to build a system I can hook up to my television that will be able to play WoW at a decent rate (I don't need ultra), stream Netflix etc in place of the Wii we use now, run online games like Pogo for my mother. My budget is 300-400 and while I've always used AMD, I'm open to suggestions for Intel as well. I have everything else, and it will run with Win 7 (if that makes a difference). Also, I have an old Dell 420 XPS ATX case. Would it be possible to reuse it? Thanks for any help/suggestions