Jessica,
Welcome to the program. I ran into the same thing a couple of weeks ago. Here is the answer I received:
Sorry, it looks like the doc actually has a bad URL for the download. The skin is in the '
Cisco Cius SDKv1' zip file in the 'Tools' section of the Documentation area: http://developer.cisco.com/web/cius/docs
The direct link to the file is currently: http://developer.cisco.com/c/document_library/get_file?p_l_id=2590374&groupId=2336146&folderId=2590337&name=DLFE-111108.zip