Changing the default XML namespace prefix generated with JAXWS

Question

Hi, I am using JAXWS to generate a WebService client for a Java Application we're building.

When JAXWS build its XMLs to use in SOAP protocol, it generates the following namespace prefix:

<env:Envelope xmlns:env="http://schemas.xmlsoap.org/soap/envelope/"&gt;
   <env:Body ...>
       <!-- body goes here -->
   </env:Body>
</env:Envelope>

My problem is that my Counterpart (a big money transfer company) which manages the server my client is connecting to, refuses to accept the WebService call (please don't ask my why) unless the XMLNS (XML namepspace prefix is soapenv). Like this:

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"&gt;
   <soapenv:Body ...>
       <!-- body goes here -->
   </soapenv:Body>
</soapenv:Envelope>

So my question is:

Is there a way I command JAXWS (or any other Java WS client technology) to generate clients using soapenv instead of env as the XMLNS prefix? Is there an API call to set this information?

Thanks!