Damn, I used to have step by step instructions on how to with pictures but I threw it away and forgot where I got it.
I'll try to walk you through it.
Take off headlights. I'll assume you know how.
With a flat head screwdriver start working it into the corner of the outside of the headlight. (part near fender when on car.) Then just little by little move farther down, prying with the screwdriver, its good to use two screwdrivers, one small one to keep prying farther and one to leave a little farther behind to sort of hold it open. When you get to the clips, make sure you unclip them before prying that part open. If one or two break, don't worry.
Also one thing to note,as your prying it apart, you can after about halfway, just start pulling the two pieces apart with your hands, its sorta hard, its good to use a razor knife to cut the glue that you see tying to hold it together as you pull apart.
One you have the front clear glass part and rear part separated, on the rear piece ther are three (I think) screws that hold the chrome piece on, take off the screw and the chrome piece comes out. Then, take out the one screw that holds the orange reflector on then take out the one screw that holds the orange cup thing over the bulb.
Then put it back together in reverse order.
Before you joing the clear glass and the rear piece, dig all the glue out you can on the rear piece where the clear front inserts to. This will help make a better seal. Also on the clear glass, pull off any glue you can with you fingernails or something.
Then put a bunch of RTV silicone in the rear piece where the clear glass will insert into and press the front and rear together. Its ok if some of the glue squeezes out. Use your finger and rub around the rim to make a better seal.
If you see either headlight fog up after, take that headlight off and run some more glue around the seal real good.
IF your worried, you can buy step by step with pictures off ebay for like $5-10 dollars.
let me know if you have more questions.
Mike