i have some files that are an 'enhanced' .tiff files with an extension of
..fmf (used by a faxing program).

i can view them with programs like irfanview (complains it doesnt like the
extension) and ms/kodak imaging (opens with no problem).

when i tell windows to show me the folder they are in as thumbnails the
default thumbnail/viewer program doesnt recognize that extension as anything
it can use. is there someway to tell the ms thumbnail program (whatever its
name really is?) that these too are image/tiff files?