System Setup + Loop Consolidation as well.
If you are new to SevenUpLive. This is the first video to watch.
UPDATE 11/22/2009: Please watch this 2.0 preview video. It's fair to say at this point that it may be worth waiting for 2.0 since the setup is radically easier in the upcoming 2.0.
NOTE: The latest OS X distribution posted here
Uses an improved template that has the IAC ports preconfigured. You still need to create IAC ports 1-5 on the mac via the instructions in the video, but it is much easier to get started now. Windows users already had this benefit before.