Azhael,
I think I've had a similar experience as you.
I went to School for biology wanting to go into botany, but went to a school that had only two botany courses! Which was stupid on my behalf. Anyway, i struggled through 4 years of biochemistry and micro-biology, but only found myself interested in the higher order classes like neuroscience, immunology, and developmental bio. Now I am a lab technician in a tissue engineering lab, and basically do cell biology every day . . . I am having a hard time feeling passionate about it, but it pays the bills. I think if I go back to graduate school I am going to research a program that really interests me first, because, while Molch is right about needing to know all that micro stuff, it's really hard to do stuff that you aren't passionate about. While I find all of biology from the nucleotide to the ecological niche fascinating, even mind blowing, I am really only passionate about things on the organism and above level of focus.
SO, Psycho, all this advice is good, but if you are kind of a slacker like me, then do yourself the biggest favor of you life and research which school you are going to and what classes it offers before you decide to go there, because most biology majors today are geared to micro biology and biotechnology. There are oodles of jobs in that industry, but it generally involves biology on a cellular/chemical level, or medical/clinical level. If that isn't something that interests you, then college will be more difficult than it has to be, and when you graduate, you won't be qualified for what you want to do.
Oh, and another huge piece of advice, do undergraduate research in your field of interest no matter what the cost. i turned down a summer of ecological survey internship because it was too far from home. I took an internship in a genetics lab instead. when I went applying for jobs, the only interviews I got were for micro bio labs. none of the ecology jobs even gave me a call. Also, a friend of mine didn't intern in any labs over the summer and was unable to find a bio job at all. having that work experience even if it's just during the summers can get you places once you graduate.
Ok, I am rambling, and probably sound like a know-it-all. I just felt like my own personal experience was relevant to this topic. Good luck in your future!