Replying to Help me buy a laptop

Im graduating today and my parents said they would help me buy a laptop for college as a grad present. Im going into engineering most likely so i need something that will run engineering programs like cad well. So im just guessing that means no mac books. Ill also prolly but a game or two on it. I want something that will just run smoothly with those programs. So my question is, what should i look for, and how much should i b expecting to pay.