Tighten the brake fluid cap, put the wheel back on, slowly pump the brake to get the pressure back up, bed the new pads and your done.
Image URL for use on other sites:
/photos/6/645139/5610843/RearBrakes027-vi.jpg
Link to send via email/instant messenger:
http://public.fotki.com/blackfnTTruck/rear-rotors-and-pads/rearbrakes027.html
Code for a Fotki Journal:
[photo id=wrqkgbrsdrkssqqxrffrfgbkfgwb type=vi style=1 align=no link=photo]