It can be confusing to find the Microsoft offices where the event is being held tomorrow. Here's some details that could help.
835 Market St. doesn't look like a Microsoft office. There's a banner over the door saying "San Francisco State University". The door from the street says "Westfield". Yes, this is the right place.
Take the elevator to the 7th floor. Go in the direction of the Microsoft receptionist, then turn left down the hallway. The hallway will jog and become a long hallway. About 3/4 of the way down it you'll come to a sign on the left saying "Additional Conference Rooms". Go through the door on your right there. Follow the corridor when it turns and the Pacifica conference room (7120) will be the second room on your right.
If you're coming and haven't registered at http://openid-rsa-interop.eventbrite.com/, please do.
See you at 9:00am tomorrow!