Brake Help!!!

I have a 98 plymouth voyager. My breaks are not working properly. Fluid is coming out of the master cylinder but from there i don't know whats happening because its only going to two of the wheel cylinders. Front driver side and back passenger side. The other two its not going to..We have bled the breaks and its still not working..Is there other bleeders than the ones on the wheel? Or what could be the problem?

I have 2 children, medical appts,and work to use this van for and well its been down a week. I was driving it with just the 2 breaks working but I have worn them brake pads down too low now so u don't stop or slow at all...

.....HELP PLEASE....:banghead:

You're having problems beyond the usual with a system that is essential to your familys safety. WHY ARE YOU PUTTING THEM IN JEOPARDY? Recommend you let the pros look at it. The only trip you should be making is to a brake shop. Even then I would consider having it towed.