paugeot 106 doors wont open?

hi hope someone can help i have a 4 door 106 1.1 but the 2 front doors will not open it locks ok with central locking knobs go up and down the rear doors open ok butthe front doors will not open At first the passenger door did not open then the drivers side packed up after a couple of weeks too so at the moment i haveto climb through the back to get to the drivers side please someone help