minOccurs=0 ?

>I have the following schema:
>
>

><?xml version="1.0" encoding="UTF-8"?>
><xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
>	<xs:element name="PRSDIE">
>		<xs:complexType>
>			<xs:sequence>
>				<xs:element ref="D_NUMBER"/>
>				<xs:element ref="D_SIZE"/>
>				<xs:element ref="D_NUM_PORTS"/>
>				<xs:element ref="D_PORT_TYPE"/>
>				<xs:element ref="D_DESC"/>
>				<xs:element ref="D_LOCATION"/>
>			</xs:sequence>
>		</xs:complexType>
>	</xs:element>
>	<xs:element name="D_SIZE" type="xs:string"/>
>	<xs:element name="D_PORT_TYPE" type="xs:string"/>
>	<xs:element name="D_NUM_PORTS" type="xs:integer"/>
>	<xs:element name="D_NUMBER" type="xs:string"/>
>	<xs:element name="D_LOCATION" type="xs:string"/>
>	<xs:element name="D_DESC" type="xs:string"/>
>	<xs:element name="CAPCO1">
>		<xs:complexType>
>			<xs:sequence>
>				<xs:element ref="PRSDIE" maxOccurs="unbounded"/>
>			</xs:sequence>
>		</xs:complexType>
>	</xs:element>
></xs:schema>
>

>
>I need to change it so all fields are optional, and the tags don't even need to exist in the file. Now if I omit the tags themselves I get an error when I import into a .NET dataset. Any advice out there?