Do you wish to Rotate the photo or Crop it?
Do you have Windows Live Photo Gallery installed? To Rotate
the photo...right click the thumbnail and choose Rotate.
To crop...the following article may be worth a look:
Windows Live Photo Gallery Help Center - How do I edit photos?
http://explore.live.com/windows-live-photo-gallery-edit-photos-faq
(scroll down to : To Manually Crop A Photo)