should not affect alignment to my knowledge
It could be your alignment or your rotors. If it's the rotos, then they need to be turned. Otherwise, it's the alignment.
Change the brake rotors
how to change front brake pads on a 1994 lexus es300
u break the car
When you change the alignment on your car, you are making sure that all of the tires are in a straight line. You can tell when an alignment is necessary because the tires will wear unevenly and your vehicle may drift.
When they wear out!!!!
When they are wore out.
because the alignment is off Warped or out of round brake rotors/drums.
It can be easy to change the brake rotors. Lift the car, remove the tire, brake shoe and rotor, put on the new rotor, replace the brake shoe, tire and lower the car.
There is a shifter interlock switch on the brake pedal which also controls the brake lights
The camber might need to be changed on a car for the tires to wear evenly. A car that is out of alignment will be very hard on the tires.
Here is a link on how to change the brake fluid: http://www.ehow.com/how_5132854_change-brake-oil.html. You are the best judge of whether you have the required skills. If you don't feel comfortable doing this, take your car to a professional.