Don't be disappointed. If you have the kit of the Enterprise from the Original Series, keep in mind that the molds for that are over 40 years old, so don't expect a Tamiya build. As for the panel lines, they finally got the raised grid removed because it was raised, not sunken and many said inaccurate. Most people paint thier own lines....
As for painting instructions you'll find that their are many opinions on what color she really was, check over on Starshipmodeler.com and you should be able to get plenty of infromation there. Another good source is CultTvman.com
Good luck and enjoy the kit!