dtd in pasp file

hi,
how do I use a dtd within a .pasp file?
I have a xml file generated by pasp file,and when i put the dtd reference
inside the .pasp it returns the following error:

Error Code: -1072896764
Error Reason: A name was started with an invalid character. 
Error Line: 4 

>>> Line 4:    <%

i think it's because the dtd doesn't validate the asp code.

Greets.

Daniel Dias
CPM-Brasil

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