Here is a link to a page I made for the computer I built prior to the one I use now. Built it around mid-late 2003 and the page has a step by step (kinda). I cut in the top and side windows and blowholes, painted it inside and out, put lights in, changed the HDD and floppy LED's and all that jazz....
The Comp has changed I still have it in addition to a newer one. The main change was installing an Antec Trueblue PSU.
http://rightcoaster.tripod.com/id3.html