Actually its farely simple and straight forward. Here is a pretty good write up on how to do it and don't worry the 4th gen and 5th gen procedures are pretty much identical and where they are not the write up will point that out. My advice to you if its your first time is to make sure you have plenty of daylight left before you begin because as simple as this job is, your first time you will run into a lot of problems (if your anything like me). If you have any questions feel free to ask. With the right tools and knowledge this will take you 3-4 hours for your first time where as someone with experience doing this could easily pull it off in 2 or less.

Shock removal/Spring install write up.