I am a math major and a junior, and I'm interested in doing REU during next summer. I've been looking through some of the REU programs for math, and while most of them still show the summer 2009 information, a lot of them sound pretty interesting. So what are some tips to get accepted to this program? Are there any math courses that I should take to increase my chance? What will I be most likely doing in an REU site? Any comment/suggestion is welcome. Thanks.