I started with a Mighty Mite Neck (CR2910) which has a rosewood finish on the fretboard - however, it really didn't look that great and I was using a black pickguard which made the flaws in the rosewood show even more. The difference in the finish product is night and day - it really looks much nicer, and didn't take much effort at all.
Note: It's important that the NON-FRETBOARD part of the neck has some sort of finish on it. Don't use this method on a raw neck.
Step 1: Preparation
Once you have that done, wipe down the neck with odorless mineral spirits. I would recommend wearing latex gloves in order to prevent leaving any fingerprints on the surfaces you want to stain.