*/
void pingDcomConnection(String host, String domain, String username,
String password, String installRoot) throws CommandValidationException {
try {
installRoot = installRoot.replace('/', '\\');
WindowsRemoteFileSystem wrfs = new WindowsRemoteFileSystem(host, username, password);
WindowsRemoteFile wrf = new WindowsRemoteFile(wrfs, installRoot);
WindowsCredentials creds = new WindowsCredentials(host, domain, username, password);
// also looking for side-effect of Exception getting thrown...
if (!wrf.exists()) {