DP-1000 and hidden menu?

[Freebeeezz]

Stupid question maybe, but where can I find the hidden menu in the DP-1000.
I've read that in this menu you can make the player region free.

Bye, Freebeeezz...

[doppie]

press on your remote

open cd tray, then push clear, then 2 7 6 and push enter

doppie

[Freebeeezz]

THX Doppie, it works...