Postmaster failed to start

Hi,

What's instaled on my NT
Installed cygwin 1.1.8 from fresh
Installed cypipc-1.08-1.tar.gz from fresh
Installed postgresql-7.0.3 from fresh

initdb
started ipc-daemon &
postmaster -i &

I installed PostgeSQL on Windows NT like KevinLo disscipted in his
installation procedure.
The installation finished with no error.
When I do 'postmaster -i&' I get this message:
C:\cygwin\usr\local\pgsql\bin\postgres.exe: ***
recreate_mmaps_after_fork_failed
Startup failed - abort
NOTICE:  IpcMemoryDetach: shmdt(0x0x4d10000): Invalid argument
NOTICE:  IpcMemoryDetach: shmdt(0x0x4c50000): Invalid argument
NOTICE:  IpcMemoryDetach: shmdt(0x0x4c40000): Invalid argument

I've reinstalled these 3 times and am still getting these errors.
Can some body help?

Thanks
-Jeff