2000 Dodge neon brakes

I bought brake pads (Wagner) ThermoQuiet pads today, and they come with these little shims. How do I use these? Must I get my feeler gauges out, or is there some little work around or guess work I can do? This is on a 2000 Dodge Neon, with 2 disc/2 drum, I'm working on the front disc. Also, anyone know why the rotors are so damn expensive? 17 a piece for my lumina, which are bigger, and vented, yet O'Reilly wants 40 a piece for the neeners rotors. Thanks!

shims? i havent done brakes on the neon, so im not familiar with how it connects to the caliper, but ive never had to use shims on my camaro... sorry man, not much help.. im sure the instructions that came w. the pads will help you? i think diff brake pad mfg will have diff instructions?