Here are our guides for Nokia N-Series phones:

Nokia N73 Disassembly/Dismantle Guide: Good guide showing how to change the screen.
Nokia N80 LCD Change/Removal Instructions: Good guide with pictures showing disassembly of handset.
Nokia N82 Dismantle/Disassembly Guide: Clear guide with plenty of photos.
Nokia N85 Dismantle + Housing Change: Brilliant guide with a few photos showing instructions.
Nokia N90 Housing Change Disassembly Guide: Guide to changing the housing with pictures.
Nokia N95/N95 8GB Dismantle/Disassembly Guide: How to change the slide and LCD with pictures.
Nokia N-Gage Take Apart/Dismantle Instructions: Pictorial guide to removing housing and chassis.