Outlet not working?

ok heres the deal in my kitchen i have 4 plugs that are on the same breaker 2 of them are working and 2 of them are not i took off the plate and plulled out the outlet i used a circit tester to test the wires when i put the tester on the black and white wire nothing happens white to ground nothing black to ground i get a light. any idea what is wrong? ps: this is a 25 year old house it dosent have the outlets with the little test and reset ons please help thanks