Greek Rushing at USC

[boomboom]

Apart from the whole obvious aspects (such as going through rush week), what do I need to do at and/or before attending USC in order to prepare myself fully in order to receive a bid. I already *think* I know which fraternity I want to join, but am fully aware of the fact that I might change my mind after being physically present. Anyway, do I need letters of recommendations? This might be shallow... but I do not know too much about Greek Life, but do I need "preppy" clothes? Do I need to hit the gym all summer?

I guess what I am asking is, what actually goes on at Rush? Do people usually end up getting bids at the fraternity they want? And also, is there anyway to give me an advantage?

Thanks