How to register/certify applet?

Does anybody know how to make a Java applet from remote host be able to open/save files or print to a local printer?

I guesss this can be done by registering/certifying/trusting (whatever is called) approach. How do I do that with my Internet Explorer / Netscape?

Thanks in advance, ytsau

It just so happens I found this URL while searching for the answer to something else:

http://developer.irt.org/script/4079.htm

This tells you how to sign an applet.