Vista - Error deleting file or folder icons from desktop

I have three icons on my desk top I can not remove. they have no extension. I
can't rename, add an extension, or even list proporties. I aways get the
error message "Can't read from the source file or disk". I have searched my
computer and support diskets of program and drivers I've installed and didn't
make a name match. They are file icons and not shortcuts. I assume because
they have not extention my computer doesn't know how to read so it also shows
O bytes. I can't open them with any program on my computer. they are;
CARMOV79
CAEX4RS1
CAMF45Y3
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Thanks lots and take care,
David P