hackszine.com has an excellent list of applications that will help remove the motion blur from your pictures.
Nathan Willis dissected three applications for removing the effects of camera movement from your photos. Two of them, Refocus and Iterative Refocus, are open source Gimp plugins. The third, Unshake, is a closed source Java application that is capable of producing high-quality results with little user effort (though your CPU will be hurting for a minute or two).
Unshaking and refocusing your photos – Link