fast pc

I'd like a PC or Laptop that can play most games (like the ones above) at high settings. My PC now can't even play Half-Life 1 at high settings, so I thought I'd look for a cheap PC or Laptop that could run these games fast. 1. My price range is $800 - Less 2. If it is a laptop I don't care...

I am a college freshman and in about a month I will be ordering a new Ultrabook because I need something light weight and portable. I am a business major. I will use my Ultrabook for papers, online homework, research, social networking, skype, and some minimal gaming(the sims 3 and emulators) I...