How do i get the outer rear axle to get onto the ball with 2 little bars comin out of it?

You should have a little metal tool that came with your rusty. It is just a peice of metal with a slot cut into it.
Take that tool, put it on the metal ball and pry it out.

Here
http://www.misbehavin-rc.com/pit-lan...all-joints.asp

THANX!!!

uuuughh...now that ive gotten the ball into the axle i cant get it back into the part attached to the car!

lol dont u hate that

YES I DO