Riding on the orbiter transporter, Atlantis is ferried a quarter-mile to the 52-story Vehicle Assembly Building where the shuttle will be attached with an external fuel tank and twin solid rockets for the STS-117 mission.
Source: NASA-KSC (4 min 31 sec MPEG-4 (H.264) file)
Download this clip to your hardrive.
(Windows users right-click this link. Mac users control-click this link)