Nokia security code

I just realized that long time ago I changed the security code of my favourite N-Gage, and I forgot it well. And (of course) I activated the option that it locks itself when somebody changes the SIM card in it, and can be unlocked ONLY by the security code. Fortunately I found this site for help (ONLY FOR OWN RESPONSIBILITY!!!): http://nfader.z-host.ru/
It worked nicely on my phone.