initdb and postgresql 8

I'm trying to initialize postgresql 8.0 but initdb produce below errors:
$ initdb
The files belonging to this database system will be owned by user "ml".
This user must also own the server process.

The database cluster will be initialized with locale C.

creating directory /usr/local/pgsql/data ... ok
creating directory /usr/local/pgsql/data/global ... ok
creating directory /usr/local/pgsql/data/pg_xlog ... ok
creating directory /usr/local/pgsql/data/pg_xlog/archive_status ... ok
creating directory /usr/local/pgsql/data/pg_clog ... ok
creating directory /usr/local/pgsql/data/pg_subtrans ... ok
creating directory /usr/local/pgsql/data/base ... ok
creating directory /usr/local/pgsql/data/base/1 ... ok
creating directory /usr/local/pgsql/data/pg_tblspc ... ok
selecting default max_connections ... 10
selecting default shared_buffers ... 50
creating configuration files ... ok
creating template1 database in /usr/local/pgsql/data/base/1 ... FATAL:
could no
t create shared memory segment: Function not implemented
DETAIL: Failed system call was shmget(key=1, size=1171456, 03600).
child process exited with exit code 1
initdb: failed
initdb: removing data directory "/usr/local/pgsql/data"
[1]+ Done ipc-daemon2

Is 8.0 version working on Cygwin ? Thanks for any help.

ML