[GRASS5] unable to open display

[ESPACE at aol.com]

hello
thank you for cygwin and grass5.0 under W2k
i've installed cygwin : ok
and xfree86 ok (x11libraries and x server)
Only when i start "startxwin.bat", the command line "start /b rxvt -fn 
"Lucidia Console -12" returns this error :"unable to open display 
"137.0.0.1:0.0"???
How to configure my display??

Thank you
FRED
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