problems with startx

[kk76@drexel.edu]

Hi,
I installed cygwin for ns-2.  After installing, when i tried startx command, it gave me following error:

giving up.
xinit:Transport endpoint is already connected<error 127>:unable to connect to X server
xinit: No such process <error 3>:server error.

Can someone help me to fix this error.??
I tried reinstalling the whole package.....but it is still giving the same error.
Kausha..:))