Standard Roundtrip Coach Class 50,000
Standard Roundtrip Northwest World Business Class 80,000
Standard Roundtrip First Class/ BusinessFirst 100,000
EasyPass Roundtrip Coach Class 100,000
EasyPass Roundtrip Northwest World Business Class 160,000
EasyPass Roundtrip First Class/ BusinessFirst 200,000


Those are the awards for miles on Continental and Northwest (they operate together as far as mileage awards go).

You'll need to charge at least 50K per year to claim a coach seat.

Chase Manhattan Bank offers credit and debit cards which allow you to accrue and use miles on Northwest or Continental as reflected above.