Step 1 is get thee to your local parts house and buy a repair manual
http://www.oreillyauto.com/site/c/d...2557&keyword=repair+manual&pt=03501&ppt=C0008
Which will have step-by-step for such things. Well worth it, even for the procedures you DON'T do ... when you see one that says 'Step 1. Remove engine. See section 347" you know you're in waaay over your head.
If on the other hand step 1 says "Put vehicle on stands and remove tires", you say to yourself, "Hey, I can manage that" ... and off you go.
Fordum's dead on, too, for left/right jobs, do one side at a time the first time. I *ALWAYS* do drum brakes this way, even though I allegedly know what I'm doing, so that I can scoot over to the other side and see how those finicky stupid springs and levers go.
In this case, while you're at the parts house you'll need a hub socket ... four-pin, big honkin' thing like these
http://www.oreillyauto.com/site/c/detail/KDT0/2467.oap?ck=Search_socket+-+axle+%26+spindle+nut_1061536_2557&keyword=socket+-+axle+%26+spindle+nut
http://www.oreillyauto.com/site/c/d...1536_2557&keyword=socket+-+axle+&+spindle+nut
And a torque wrench, plus your basic set of hand tools. (Which are all explained in the first bit of the repair manual too!

)
Anyway from memory: remove the hub covers (1/8" Allen wrench / hex key), remove the hub (pick or small flathead, swearing), remove the locknut (big socket, screwdriver, swearing), then the rotor/hub assembly is loose, pull the outer bearing, and the inner one comes off with the hub, that seal on the back holds it in.
Ah yes, I forgot remove the caliper (3/8" hex, dusty) -- again, the manual would be good as it gives you the right order in which to pull things.
Lots of rags, clean the spindle and give it the ole "visual inspection", i.e. look at it. If it's scarred and pitted, that's bad; if it's smooth, you're good. As the book says, "installation is the reverse of removal."
-- A