I have been trying to figure out what each individual thing in a computer is, but getting no where. So I was looking to build/buy a gaming computer for no more than $700. I was looking for one that could run games like Minecraft, League of Legends, and World of Warcraft without lag on medium settings. A DVD/CD drive thing is not necessarily needed, but if it could fit into the budget, then why not. Could you please list what I would need with the price. Thank you.