PostgreSql on windows 98

Hi,

I try to do work PostgreSql on window 98.
I had try and succes on winnt, but on windows 98 I have the following
message :
pq_flush: send() failed: The descriptor is a file, not a socket
pq_recvbuf: recv() failed: The descriptor is a file, not a socket

It's the postmaster that sais this.
The initdb script is ok.

I try with some several options
PGHOST, PGPORT, PGDATA, but any of this change the error.

In a strace command (strace -o psql.log psql -h 120.0.0.1 template1),
I found this message

848 330060 [main] psql 526351 cygwin_socket: 3 = socket (2, 1, 0)
654 330714 [main] psql 526351 cygwin_setsockopt: setsockopt optval=1
528 331242 [main] psql 526351 cygwin_setsockopt: 0 = setsockopt (3, 6, 1
(SO_DEBUG), 254FC18, 4)
45329288 45660530 [main] psql 526351 __set_winsock_errno:
cygwin_connect:883 - winsock error 10060 -> errno 116
461 45660991 [main] psql 526351 _close: close (3)
621 45661612 [main] psql 526351 fhandler_socket::close: 0 =
fhandler_socket::close()

If you have any idea ???
thank a lot

Sam