SkylineMD said:
there is generally no point in research unless you get something out of it (i.e. publication) so you first need to find someone that will be willing to help you out on that. secondly, they may or may not pay you...
For the most part, this is true. Pubs are the best evidence that you do good work and contribute significantly to the field. These make great lines on your resume if you're interested in an academic residencies and/or fellowships. Otherwise, it's a lot of work for little utility.
You may have time, depending on the type of work and how far along the project is, to do research during the med school year. For example, doing molecular genetics work from scratch is different than, say, a clinical outcomes paper based on a retrospective analysis of patients. The former is time-intensive: You have to make your own protocols, recruit subjects/animal work, do reactions, compile and interpret results, write it up, etc. The latter has alot of the work already done - all you need to do is look up charts, see who lived and who died, apply statistics, and voila! Instant paper.
Unfortunately, you really need experience in research to see these things, but look around at different labs, know your available time commitment, and see what projects they have going on now. Some may be half-finished and only need a warm body to finish them up. Projects in your speciality are good (cardio project for a student interested in cardiology) but not required. It also helps to have supportive PI's and co-workers. Make sure they will help you get a pub.
There's also time for research in the summer between MSI and MSII, and schools generally allow you to take "research electives" during MSIII and MSIV. Instead of going on the wards, you have 4-6 weeks of protected research time.
Most med student summer research programs I've seen rate $4k/summer. At 40 hrs/week, that's ~$10/hr. You can make better money slinging coffee.