Need help with a 6-700 dollar rig

So I've spent about 6-10 hours on newegg trying to build a gaming computer, and I've found quite a few good combo deals, but I feel like I'm not too understanding between the differences in mother boards, and amd/intel, but I am leanining towards an intel because I hear I5 is betterwith the pcsx 2, and I bought a HP quadcore with 6 gigs, but it felt slow, and would barely run starcraft 2, so I took it bag and am buying a newegg comp today, and thought I'd come here for advice.

I'd prefer to spend low 6's but can do 700 barely... I do not need a graphics card, I'll get one around my birthday, which is near black Friday.. please help me out!! Do I want an i5, or a ii x4 or x6, I'd appreciate any help or builds anyone can help me with. Thanks for taking the time to read this, sorry for my typing, this is a cell phone post.