Opportunity...help!

I have a question for you guys...here's the situation.

I have been at my current job (bedside) for about 5 years now. I have worked with a lot of nurses who feel trapped in their jobs. They have worked at the same place for 10, 15, 20 years, and would like to try something new, but can't do that without taking a large pay cut. I would like to try something different, and I'm afraid that the more raises I get (hooray for the start of fiscal year '08!), the more I'm going to be afraid to leave my current job. But lately I've come across a few jobs that have piqued my interest (all M-F, no or only occasional weekends). Here's my problem. I only have experience in the type of nursing I am doing right now. I have no idea what an office nurse, or say, a utilization review nurse would do. I'm scared to quit a full time job where I am relatively happy and fairly well paid, to try something that I have no idea if I would even like. All of the part time positions I have found would call for experience I don't have (e.g., OB). What should I do? Stick around where things are familiar and wonder what might have been, or take a leap and see what happens, knowing full well that I might hate the new job? I'm nervous about applying for these jobs, and frankly, I don't know why I'm worrying 'cause I probably wouldn't get them anyway! But I think I'm ready to try something new...Help!! What have you done in situations like this????? Any words of wisdom? I'm thinking about just applying for the experience...I know I don't have to take a job if it's offered...yikes! :uhoh21: