Transmission help 02 explorer?

I have an 02 4.6 L V8 Ford explorer and the transmission went out. It won't go to 3rd 2nd or 1st gear doesn't reverse or drive and when I shift it to park it makes a loud rattling noise. I was driving it on the highway when it started to just jump forward and the speedometer suddenly went to 120. I pulled over and when I went to drive it again it wouldn't budge. Do I have to replace the entire transmission or is it just a part in the transmission that I have to fix?

What do I use to clean aluminum rims?

I recently bought a 2000 Ford explorer and the rims are aluminum and they have a gross white oxidized look to them and I was wondering is there anything that can remove that. And is this product something that I can find at a local Auto Zone?

Serpentine belt 98 ford explorer v6 4.0 SOHC?

There's a loud ticking noise coming from the serpentine belt area when I start my car. If I stand in front of the car; the noise is coming from the drivers side. It stops upon acceleration but I don't know what it is… Is the timing chain on the drivers side?

Ford Explorer Models

I'm doing some research on Ford Explorers (i'm not buying one) and I need to know every single model there's of it. This is super important! If you don't know all of them just please tell me the ones you know, thanks!

Added (1). Ones made in the past 5 years!

My car won't lock from the outside?

I have a 99 Ford Explorer and you can open it from the passenger side door even if it's locked. The other doors are alright. (Except for rear drivers side that doesn't open at all) The alarm doesn't even go off if you open it while it's locked. Can I fix it myself or should I take it in?