Ha!!! Found a solution for my prob :-)
I connected the remote computer using Telnet from local and executed all the commands, as i do in remote server after logging on with Remote Desktop. The problem before was, Telnet service was not activated in the remote server. So by typing 'services.msc' in Run, activated the Telnet process (After logging into Remote Server using RDC).
This may sound silly but this is really a very big issue for me :-E Especially thanks Corion for helping me and all the monks who replied!!!!