My daughter's iPhone 3GS (my old one) stopped charging. Took it to the Apple store and they said the dock connector was broken. They would give me a new one for $149, but they wouldn't try to repair it, nor could they get the data off (which was a problem as she hadn't synced it in months).
Very well. It took longer than I though as the screws are super tiny and my screwdriver isn't magnetic. Eventually was able to get everything in place.
I think it's OK to have your video guides go another minute or two by showing the reassembly process. I know it's usually just working backwards, but it's helpful to see someone do it.