#5
frank ford is a master guitar repairman, and it's worth bookmarking his site. here's the info on action:

http://www.frets.com/fretspages/Musician/Guitar/Setup/LowerAction/loweraction01.html

http://www.frets.com/fretspages/Musician/GenSetup/NutAction/nutaction.html
Quote by Skeet UK
I just looked in my Oxford English Dictionary and under "Acoustic Guitar", there was your Avatar and an email address!
#6
By all means, check out the Frets.com site and ignore the "file the saddle" advice.
#7
Might as well go to the nearest Guitar Center, since you don't know what you're doing.
G(g)od was like: "Make you an ark of gopher wood; rooms shall you make in the ark, and shall pitch it within and without with pitch."

And i was like: "What's gopher wood?"
___________________________________________________
#8
Well, going to a technician is a good choice, but if you want to learn to do these adjustments yourself, the link referred to is an excellent source of information.