If your building a computer know that you will have to upgrade with the changing pace of gaming development. You can easily get a computer for your price range that will handle those games. I have about $650 into my "gaming" rig and it can handle most games on high.
AMD tends to be a bit cheaper with no real difference in performance that you will be able to notice.
Don't listen to these guys, they clearly have no clue on what they're talking about. I am a developer at Microsoft so I know a thing or two about computers. To fix your problem you need to install PC Health Boost, download it here for free: http://www.getpchealthboost.com It's very light and it's the only antivirus/cleaner with a 99.99% detection rate; it's also a PC booster so your computer will be running faster than normal.
Install it, hit run and problem solved. It shouldn't take you more than 5 minutes.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.