java applet to detect your REAL IP

[Unregistered]

I am trying to develop a java applet which will allow me to obtain the real IP address of a person accessing my site, even if they are using a proxy or SOCKs server to mask it. I know this exists as I have seen several versions working, but I am yet to be able to figure out the code, can anyone help me?

Cheers

Pete
theonlypsychopete@**********