Congratulations, you have proven worth of the Da Vinci Code Quest on Google, visit www.Google.com/DaVinciCode to see if your journey continues.
Upon visiting the link in the note the page says the final challenge has not yet begun, I guess we'll all find out sooner or later when that happens.
The cryptex itself is not as the ones in the book. There is no vinegar and you can pull and twist and throw it without having to worry about the secret message being destroyed. Also the total amount of possible combinations is not 265 ~ 12 millions, but 262 = 676 since only two teeth are present instead of five. See the encircled area in the image below.
It's possible to change the password. Simply unscrew the two small screws on the side of the opening and take the top part out. The dials are movable on the ring. See images below.