Step 15: Wireless - The most "Can I send him to the corner store for some snacks yet?" step
Reattach the Bluesmirf.
Attach the batteries.
The BlueSmirf will appear on a different COM port than the USB.
NOTE: BlueSmirf and USB connections do not play nice together.
You cannot connect via BlueTooth when the USB is connected.
You cannot update the Arduino code when the BlueSmirf is connected.
I hope you didn't skip the molex!
You can use Bluetooth while drawing power from the wall warts. (You don't have to use Bluetooth with the battery packs)