How to run X locally/remotely on cygwin/X

* select X packages
* select openSSH under net
* run cygwin, wait till shell pop up.
* cd /usr/X11R6/bin
* startx
* or you under window, double click startxwin.bat
* x-window will pop up locally.
--run the following command on locally xterm.
ssh -Y -f -l username machinename xterm

an Xterm will be popping up displaying remote machine.
From there you can run other applications.