c:\windows\web\rdweb\ … renderscripts.js

  if ( objForm != null )
{
strDomainUserName = objForm.elements(„DomainUserName“).value;

        // add default domain…
        if ( strDomainUserName.indexOf(„\\“) == -1 )
        {
          strDomainUserName = „CHARLYMONKEY\\“ + strDomainUserName;
          objForm.elements(„DomainUserName“).value = strDomainUserName;
        }

strPassword = objForm.elements(„UserPass“).value;
strWorkspaceId = objForm.elements(„WorkSpaceID“).value;

http://social.technet.microsoft.com/Forums/en/winserverTS/thread/f02bd61f-d6fd-4c05-b17a-deffcc61a4e9