No, doing a brake job does nothing to the front end.
Whenever you get anything that has to do with the front suspension replaced you should go get your car realigned It is just good to make sure that you have it aligned.
Get you front end aligned, that should take care of the shakes.
No you dont have to. All I did was was pump the brakes with the car running
take brakes off and calipers off, next rotors should come off easily.
You may have mis-aligned the sensor when you replaced it.
No, the brakes have nothing to do with the drive shaft.
http://groups.msn.com/Sorensonbrian/frontbrakepads2002.msnw
Only if the rear system was opened where it may have gotten air in the lines.
No. You will only need to replace the brake shoes if they are worn down. Generally the front brakes do 70% of braking leaving the rear with 30%, which will cause the front pads to wear first. What is important however is that you replace either front brakes or rear brakes as a set. i.e. if you're replacing the front brakes do the right and left side.
Disc Brakes should be the answer to the question.
If you don't repair your front brakes, your back brakes will wear down faster. This will cost you more money in the long run. It's probably important to have all your brakes working.
These instructions are for the front brakes, but they are similar. http://www.hspn.tv/?videoid=44&catid=1