To doc2b34,
Don't let the naysayers disuade you if dermatology is indeed your passion. Here's what you need to do to make yourself competitive for dermatology:
1) Attempt to ace absolutely everything you do in medical school. We're all human, so you probably won't have a perfect transcript, but try as hard as you can to strive for it.
2) Boards are huge. To prove to many allopathic programs that you're the equal of an M.D. candidate, you need to score as high as possible on USMLE Step 1. If you happen not to, all is not lost, but it does make your job considerably harder.
3) Do research during your freshman summer and any other free time you have. Your goal should be to be published as a first author by the time you are a senior applying for residency. Case reports are fine, but more in-depth case series or bench research in dermatology are much better. Granted, this is easier said than done.
4) Rotate during your third (if possible) and fourth years through some allopathic programs you might have a reasonable shot with - i.e. in your home town, or a place you did research during that freshman summer, etc. I hate to say it, but you've got to be realistic - the Tiffany programs in dermatology probably aren't going to take you. During this time, you need to be yourself and hope that everyone at the program loves you, as this is your best chance of being accepted.
5) If your efforts fall through, prepare to do what many M.D. candidates (and there are many) who fail to match in dermatology do, and look for a research fellowship of 1 to 2 years which will enhance your marketability to allopathic programs.
Don't let anyone tell you otherwise: this is, bar none, the most competitive specialty out there, and you are starting with a strike against you, but nothing worthwhile has ever been easily obtained. I wish you the very best of luck, and encourage you to go for it - dermatology truly is worth it.
AV