What do you mean by the initial raw setup ? It's very rare that I use ACR as such, as I much prefer Lightroom, which in actual fact is ACR with a few bells and whistles.
On the odd occassion that I do use ACR. I open them by going to "File">>"Open". Select the folder/card where my Raw files are and then select all of them. These will then open up direct in the Adobe Raw editor.
I don't use "Bridge" as I thinks it's a waste of time