Sorry to continue the hijack, but
To rewindthemovie,
Getting published as an undergrad usually has little to do with writing. Getting published is a result of contributing significant amounts of research towards the paper. The authors on a paper are listed in this way... The first person is the one who did the most towards researching the paper and has done most of the writing(usually a grad student or post-doc). That's a big deal. The last person listed in the authors' list is usually the principle investigator who funded and oversaw the project (This won't be you for at least 15 years). Also a big deal. In between are other folks who contributed to the research, usually in decreasing order of "amounts of work. For instance, I was 3rd author on a paper. I didn't do much writing for the paper (just some figure legends and figures), but I did spend a year doing research for it. So getting published as an undergrad is great. Getting a first authorship (especially in basic research as compared to clinical) is huge. Kudo's to those who do it.
So getting published by the second semester of your freshman year? not likely. But research the profs and docs(if you're at school with medicine) and find one whose research you're interested in. Then read up on what they do. Contact them and see if they'll let you volunteer in the lab. You'll probably start by doing scut work (making solutions and such), but you'll move up. by the time you finish school, you'll have a good shot at publication (especially if you've got a PI who is cool and knows how good it can be for you) and at the very least a great letter of rec.
Warning though.... Don't do it just to do it. As people say all over this forum. Do it because you're interested in it and excited about it. Otherwise you're wasting your time. And by the way scientists have a huge disdain for pre-med students who are just looking to "score points." and can smell them a mile away. These people have dedicated their lives to research and their time is precious. They're not willing to give it up just to help you get into med school. Do it cause ya love it.