Thing is, I bought a brand new box that I'm quite fond of, power supply is pretty state of the art(bought it since my old one couldnt handle the last upgrade). I might just go with a nice dual core then, and maybe upgrade ram a bit.
I'm also going for a widescreen Full HD monitor, since I can't really fit a TV into my room. I want to see games/movies/tv in HD, just my thing

Does that mean I need a special graphics card for it?