Generating XML from XSD

Hi all,

Am looking for a way to generate XML based on XSDs so that the final XML need not be validated against the XSDs again.

Here is the part of the XSD

<xsd:element name="first_element">
    <xsd:complexType>
    <xsd:sequence>
    <xsd:element name="val"/>
    </xsd:sequence>
    <xsd:attribute name="is_added" type="yes_or_no" use="optional"/>
    </xsd:complexType>
</xsd:element>

and here is the sample XML file that am looking for

<first_element yes_or_no="yes">
<val>
This is a sample text - auto generated
</val>
</first_element>

I searched the forum but could not find anything related.

Any pointers - much appreciated.

Thanks