How to repair a gearbox on a 98 ford expedition?

I have 98 ford expedition, and I need help on fixing my gearshift box my steering wheel has a lot of play in it and a wheel alignment won't work right now but after that's repair, so if any one really knows and has images and or page I can go to see step by step so I can't get it fix and what tool I may need to help it the job done, I want to thank anyone who can help me out.

Gear Box refers to the transmission.

Some steering boxes kind be adjusted / remove play in wheel. But, it is something the avg Joe can't do. It involves centering the wheel and tightening a bolt on the box.

So is it the gear box or the steering that your having issues with. They are not the same thing.