mimeTypes.rdf I really want to understand, help, please

First, thank you for the help you can give to me :)

I really want, I really try but no way.

I clear a little the code of the rdf files that I found on the net and i already be 
able to make order in the chaotic files following the instrucctions 
but still doesn't work.

So, i know is hard, and no one is going to have a look to this code, 
but, can someone say me what is wrong?. The mayor error, because i 
wanted to do like that is that NC:Path is notepad.exe, but i wanted 
it (there are comments in spanish too):


--------------HERE STARTS THE CODE----------------


<RDF:RDF xmlns:RDF="http://www.w3.org/1999/02/22-rdf-syntax-ns#"

xmlns:NC="http://home.netscape.com/NC-rdf#">

/* Aquí comienza el documento de mimes */

/* La primera parte especifica cuales mime van a usarse */

<RDF:Description about="urn:mimetypes">
	<NC:MIME-types>
		<RDF:Seq about="urn:mimetypes:root">
			<RDF:li="urn:mimetype:application/pdf" />
			<RDF:li="urn:mimetype:application/zip" />
		</RDF:Seq>
	</NC:MIME-types>
</RDF:Description>



/* Esta parte de especificación de mimes ya esta definida */

/* Ahora empiezas las propiedades para cada mime que son 3 para cada 1 */

/* PDF inicio */


<RDF:Description about="urn:mimetype:application/pdf"
		NC:value="application/pdf"
		NC:editable="true"
		NC:description="Archivo PDF"
		NC:fileExtensions="pdf">
	<NC:handlerProp resource="urn:mimetype:handler:application/pdf" />
</RDF:Description>

<RDF:Description about="urn:mimetype:handler:application/pdf"
		NC:useSystemDefault="false"
		NC:saveToDisk="false"
		NC:alwaysAsk="true">
	<NC:externalApplication resource="urn:mimetype:externalApplication:application/pdf" />
</RDF:Description>

<RDF:Description about="urn:mimetype:externalApplication:application/pdf"
		NC:path="e:\\win2k\\system32\\notepad.exe"
		NC:prettyName="Acrobat Reader">
</RDF:Description>

/* PDF fin */

/* ZIP inicio */

<RDF:Description about="urn:mimetype:application/zip"
		NC:value="application/zip"
		NC:editable="true"
		NC:description="Archivo ZIP"
		NC:fileExtensions="zip">
	<NC:handlerProp resource="urn:mimetype:handler:application/zip" />
</RDF:Description>

<RDF:Description about="urn:mimetype:handler:application/zip"
		NC:useSystemDefault="false"
		NC:saveToDisk="false"
		NC:alwaysAsk="true">
	<NC:externalApplication resource="urn:mimetype:externalApplication:application/zip" />
</RDF:Description>

<RDF:Description about="urn:mimetype:externalApplication:application/zip"
		NC:path="e:\\win2k\\system32\\notepad.exe"
		NC:prettyName="Archivo Zip">
</RDF:Description>

/* ZIP fin */

/* Aqui se acaban todas las propiedades de mimes */

/* Aquí se acaba el documento de mimes */

</RDF:RDF>