Gall Bladder surgery was my first and only surgery. I, like you, was scared to death. But it was very simple!! I have three little scars on my right side under my rib cage and a little larger one straight down from my belly button (you can hardly tell). When you go in, just talk to them that you are kind of scared about what's going on. They will talk you through what they are doing before they put you out to make it easier for you. With the attacks I was having, the surgery was well worth it for me.
The only draw back is,as ReeAnn said, some people have problems with diarrhea after the surgery. I do only if I eat greasy foods (which I try to avoid). I had my surgery two years ago next week and am MUCH happier without it. Don't scare yourself before the surgery though. It's really no big deal at all!! And like I said, talk to the Doc, and nurses and anesthesiologist before being wheeled in....I know for sure they will have no problem in trying to ease your fears when you go back to the OR. They helped me out alot (of course most of the time they were making fun of my sister since she is a nurse there....and I LOVE to make fun of her!!!)!!
Cassy