There's a lot of great info on this site and the search feature is great. Here's the best thread on the SB100 process:
http://clubcobra.com/forums/showthread.php?t=93940
You cannot go to the BAR appt. without visiting the CHP first. You cannot visit the CHP without having visited the DMV. The DMV is your first stop. Not every DMV requires the B&L inspection, but that is a form that you will finish with at the DMV. Your first and last stop. This thread will explain it more detail.