Snap!
I was just reading about fork set-up at the same time. http://www.nsr-world.com/tuning/250-tuning/suspension/
I also found this tutorial on the Tyga website which easily explains how to take an oil level reading.
http://tyga-performance.com/images/00psm/02tpfitman/08fitmantuning/14mc28frontfork.pdf