SCM Control and username

[Todd Nine]

We have the following URLS

<scm>
    <connection>scm:cvs:ext:[EMAIL PROTECTED]
:/a01/proj/CVS:webservices/ServiceProviders</connection>
    <developerConnection>scm:cvs:ext:[EMAIL PROTECTED]
:/a01/proj/CVS:webservices/ServiceProviders</developerConnection>
    <url>
http://empt.ata.com/cgi-bin/cvsweb.cgi/webservices/ServiceProviders/?cvsroot=ATA.com-Development
</url>
</scm>

Since we have several users, I need to replace username with the username on
the server id "ata" from settings.xml.  How can I perform this?

I have the following in my settings.xml

<servers>
    <server>
      <id>ata</id>
      <username>c200506</username>
      <configuration>
           <sshExecutable>plink</sshExecutable>
           <scpExecutable>pscp</scpExecutable>
      </configuration>
    </server>
  </servers>

I need the username in the scm url to be set to the username above.  I can't
seem to find any documentation on how to do this.

Thanks,
Todd