Ok dreamin I will help you get started.
While your car is on the ground break loose the lugs for the front wheels
Raise the front and place jack stands under the car. (if you do not have jack stands or automotive jack then you can do one wheel at a time using the spare tire jack)
Pull the front wheels off.
Pop the hood on the car (while its still on the ground
) now while its up in the air open the hood and lock it open.
* Ok now you have two options * 1. start from the top OR 2. start from the bottom
Either way after taking the bolt out of the bottom of the coilover or the bolts off the top of the coilover... your going to need to remove the full coilover. (remember to make sure the brake line is not attached to the coilover when removing it)
After you have the coilover in your hands and off the car you need to have a spring compressor and compress the spring (this can be as simple as a $20 kit from sears or autozone)
Once the spring is compressed and there is no tension on the top hat you can unscrew what ever is holding the top hat on.
Slide the OEM spring off and slide the new ones on (slowly uncompress the OEMs and compress the new ones)
Re install the top hat and re install the coilover from the bottom first ( the easiest way to do this is to slide the top hat bolts at an angle into their holes and put the bottom into position. now with everything aligned install the bottom bolt and then install the top nuts. you may have to pull down on the hub to get the coilover to fit * please be careful doing this *)
******* OK now for the Rear ********
I would follow the same steps however this is a different type than my Lexus or S2000 so I am not too sure about the process completely.
I hope this helps
Mike