I have a 1099-B for day-trading. It does not show anything other than profit/loss numbers in boxes 8/9/10/11. How do I enter it?

Form 1099-B is used to report investment sales. You need to know the sale amount, cost, date purchased and date sold in order to properly enter your investment sales on your tax return. If that information is not entered on your form 1099-B, you will have to request a detail report from your broker and compile that information on your own. 

You have got to be kidding. Actually you missed the question. A day trader can make hundreds of contract buy/sells each day. There is no way one is going to enter each of these into TurboTax. That is why we receive a 1099-B with the total Profit/Loss for the year on lines 8 and and 11.