Problems with namespace prefix

I’m new to all this so please excuse my ignorance 🙂
Case: I made a schema for my XML data that looks like this:

[code:1:72c3072d7e]<?xml version=\"1.0\" encoding=\"utf-16\"?>
<xs:schema xmlns:b=\"http://schemas.microsoft.com/BizTalk/2003\" xmlns=\"http://BizTalk_Server_Project1.Schema1\" targetNamespace=\"http://BizTalk_Server_Project1.Schema1\" xmlns:xs=\"http://www.w3.org/2001/XMLSchema\">
<xs:element name=\"Root\">
<xs:complexType>
<xs:sequence>
<xs:element minOccurs=\"1\" maxOccurs=\"unbounded\" name=\"Row\">
<xs:complexType>
<xs:sequence>
<xs:element name=\"Field1\" type=\"xs:string\" />
<xs:element name=\"Field2\" type=\"xs:string\" />
<xs:element name=\"Field3\" type=\"xs:string\" />
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>[/code:1:72c3072d7e]

When I chose Generate Instance on the schema in VS I get that following XML which works fine when I run it through my BizTalk project

[code:1:72c3072d7e]<ns0:Root xmlns:ns0=\"http://BizTalk_Server_Project1.Schema1\">
<Row>
<Field1>Field1_0</Field1>
<Field2>Field2_0</Field2>
<Field3>Field3_0</Field3>
</Row>
</ns0:Root>[/code:1:72c3072d7e]

My problem is that the real xml I will have to run through the project doesn’t have the ns0: prefix. Like this:

[code:1:72c3072d7e]<Root xmlns=\"http://BizTalk_Server_Project1.Schema1\">
<Row>
<Field1>Field1_0</Field1>
<Field2>Field2_0</Field2>
<Field3>Field3_0</Field3>
</Row>
</Root>[/code:1:72c3072d7e]

When I try to run that xml through biztalk it doesn’t work. I end up with an xml without the fields.

I’m sure I’m just missing something simple and obvious. Afaik if you don’t have a ns prefix it should use the default namespace, which I set with the xmlns=\”http://BizTalk_Server_Project1.Schema1\” line in the schema, right?

Any pointers would be appreciated