Do a search for a DIY on this website and also try e46fanatics.com. If you don't feel comfortable doing it yourself, I believe I would definetly try to find a body shop with expierence on installing it. Would hate to think you would mess your trunk up if you don't know exactly what to do. Good Luck!
2000 323i premium pkg, xenons, oem clear corners & sidemarkers, tint, k&n filter, oem chrome tail pipes, heated seats