FEADIE helps when Internet Explorer keeps telling "Error: This file cannot be viewed on the device". Setting this file extension in FEADIE should solve this error message. In case you want to download some file and it displays as text, go to \Windows\Profiles\guest\Temporary Internet Files\Content.IE5 and find the file by its filename. (This problem often relates CAB files because many web servers are missing Content-Type for this extension.)