I also did research for a couple years. I hated it also, but some good did come out of it. I got to present at a national conference, I get to be first author on a scientific publication, (both look excellent on a resume) and my RA wrote a letter of recommendation for me.
The thing that frustrated me the most about it was that it was sooooooooo sloooooooooooowwwww. It just took forever to gather all the data. And then another forever to compile it and do the analysis on it. I was also worried at first that I would be responsible for writing up the paper and the grants, etc, because my RA told me to submit it to him. But there was no need to worry. He went back through and edited it for me. At the undergrad level, they don't expect you to know everything or even to be able to write or present well. It's your chance to learn by observation and working closely with your advisor in the lab. I think they just expect you to do all the dirty work... ie gathering data and keeping it organized. Then running analysis on it the way they showed you to do, and keeping that data organized.
I thought about quitting MANY times. I really really hated it. I was not interested in the topic at all, I discovered. I'm glad I finished only because I would have hated how I felt if I quit, and because after it is all over it was a valuable experience.
If I had quit early would I have regreted it? Probably, but only because at that point I didn't realize how much it was going to suck later on
Seriously, if you think you can find something to do that is more interesting to you, then go for it. I don't know how you are going to talk to your advisor about it but if you are honest and you do good in your classes, I don't think he'll hold it against you. He'd rather have someone in there that really loves his work, anyhow. If you left the lab, it would open up an opportunity for someone who really wants to be there.
Good luck and update us on what happens!
If you stay, I agree with the other poster about getting paid. I wrote a grant (with the assistance of my RA) and got a stipend for two semesters. This was free money for me to spend any way I wanted, and a portion of the money went to the department. It wasn't chump change. It was $2600/semester. I got a check from the office every Friday until the $ ran out.