mackie, yes, it is very important that you are familiar with the studio/studios that you are interested in. You will almost certainly be asked to discuss it/them during the interview portion of your artistic review. Not only is it important for this reason, but even moreso because you should know which one you want to study in, which I guess is pretty obvious, right?
The studios are VERY different from each other, in many ways, everything from the artistic vision, the methods studied, the type of students, the classes, faculty, etc. Without knowing the many differences, an applicant wouldn't know which one to indicate during their interview.
You may (probably) have already done this but read the descriptions of each studio on the Tisch website. Look at the detailed curriculum for each. Also look at the websites for each studio itself and familiarize yourself with the information available there. Many of the various methods have books written describing the techniques. It is a good idea to have read these to determine which you are interested in but it is getting a little late to be doing that now, admittedly.
You can also inquire of current students on sites like the NYU community in livejournal. I believe there is also a Tisch livejournal community. Good luck!