Error message receiving during CSS validation using the file upload method

Hi:
 
I have been trying to validate the attached CSS style sheet using the file
upload method. I get the following error message
 

Lexical error at line 1, column 3. Encountered: "D" (68), after : "<!"

No Style sheet found

Please help I do not know what the error message means. I believe it means
that on line 1 col3 it encountered a syntax error.  I have checked the
DOCTYPE statement several times (retyped, copied it directly from your
website, changed it to transitional , and loose options)  and I still get
the same error message. In the HTML validator there was an error message
indicating that the validator did not work with Internet Explorer due to a
Windows Xp Service Pack 2 bug which was fixed in Ms05-014. The article
advised that I download Ms05-014 and install it. I did that , and still get
the same message.
 
I inserted the style sheet in an HTML document via a link statement, and it
seems to work fine. However, I want to develop good coding practices and
want to conform to the W3 standards.    
 
Please Help. I do not have another browser 
 
 
Hormazdyar S  Dastoor
Farohar Technologies,
335 First Avenue
Stratford CT 06615
homidastoor@hotmail.com
hormazdyaz@sbcglobal.net