M so sorry, my software is spoilt so m unable to test my code hence I can't post error messages yet. Waiting for a frnd to cum online so I can test on her compiler. Reinstalling my compiler has failed many times. Now, m partly running out of time & have yet to find java code for symmetric key block cipher which works, a working md5 algorithm & do string comparison successfully. Hence m asking some1 to see if my code is alright. I can't find working NTLM authentication java code either. So many things & m still @ a trial & error phase.