See related link.
Just google how to replace disc brakes for a good description with pictures, or drum brakes if you are doing the rears. Disc is very simple job (less than an hour), drum not so much (can take 4 hours the first time you do it).
You have to take out the engine to get to it.
pull the center cap off, pull out the cotter pin, unscrew the bolt. work the drum off ( may take some prying ) and then all the drum internals will be exposed.
take it to the Toyota dealership and ask them to replace it
5-30
I did not think the Windstar came with *front* drum brakes (assuming the question is referring to brakes)...There are instructions for changing front disc brakes and rear drum brakes in the "Related Questions" below
it either has front disc brakes and rear drum or it has front and rear disc bakes. look for a flat disc in the front and back - those are front and rear disc brakes-they take pads. The drum brakes take shoes.
Go to your local garage and ask. Ask how much the brakes are and ask how much the labor will cost. Also see how long it will take.
No, the value will not change at all. If you replace drum brakes with drum brakes as you said youwe're doing, it is the same as it is now, so no value change there unless you change something and replace it with something different, then you may have some value change.
the same way u take them off
Watch how you take them off and put them back on the same way. Then you have to bleed them since there drum brakes
Disc/drum brakes DOT 3