Two schemas one object

[IsValidUN]

Does anyone have a recommendation for handling a case where (at least) two schemas define an class with only slight variation, as to the best way to handle so I can combine to one class?
For example. schema 1

<xs:schema
targetNamespace="http://www.xyz.com/PROTO1#"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:cpl="http://www.xyz.com/PROTOCP1#"
xmlns:am="http://www.xyz.com/PROTO1#"
elementFormDefault="qualified" attributeFormDefault="unqualified">

<xs:import namespace="http://www.xyz.com/PROTOCP1#"
schemaLocation="PROTO1.xsd"/>

<xs:element name="AssetMap" type="am:AssetMapType"/>
<xs:complexType name="AssetMapType">
<xs:sequence>
<xs:element name="Id" type="cpl:UUID"/>
<xs:element name="AnnotationText" type="xs:string" minOccurs="0"/>
<xs:element name="VolumeCount" type="xs:positiveInteger"/>
<xs:element name="IssueDate" type="xs:dateTime"/>
<xs:element name="Issuer" type="xs:string"/>
<xs:element name="Creator" type="xs:string"/>
</xs:sequence>
</xs:complexType>
/xs:element>
</xs:schema>

Schema#2

<?xml version="1.0" encoding="UTF-8" ?>
<xs:schema targetNamespace="http://www.xzz.org/schemas/429" xmlns:am="http://www.xzz.org/schemas/429"
xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" attributeFormDefault="unqualified">
<xs:simpleType name="UUID">
<xs:restriction base="xs:anyURI">
<xs:pattern value="urn:uuid:[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}" />
</xs:restriction>
</xs:simpleType>
<xs:complexType name="AssetMapType">
<xs:sequence>
<xs:element name="Id" type="am:UUID" />
<xs:element name="AnnotationText" type="xs:string" minOccurs="0" />
<xs:element name="Creator" type="xs:string" />
<xs:element name="VolumeCount" type="xs:positiveInteger" />
<xs:element name="IssueDate" type="xs:dateTime" />
<xs:element name="Issuer" type="xs:string" />
</xs:sequence>
</xs:complexType>
<xs:element name="AssetMap" type="am:AssetMapType" />
</xs:schema>

Notice elements are not in the same order. I would like to crate a single class to be used for both schemas (if possible) This would be using .net 2.0 using the XMLSerializer. (language is not important)

Can you specify two different namespaces based on some condition?
Other ideas?
Thanks