about blackrock's SA position...

would anyone happen to know this...
i'm trying to apply for blackrock's SA position. however, they don't specify as to whether or not you should select a particular group (account management group, blackrock solutions, etc.).

so should i indicate that i want to work for a specific group in my cover letter/resume, or will they place me in a group that they think would be fitting for me (if i get through the interview, that is)?

thanks in advance.