Signing a XPI - Installer ???

"Freddie" <[email protected]> Sun, 20 Nov 2005 19:17:27 +0100

Newsgroups	gmane.comp.mozilla.devel.xpinstall
Organization	Another Netscape Collabra Server User
Message-ID	<[email protected]>

Hi !

I have an xpi and I want to sign it. I wasn`t able to find a webside that 
answers me.
I have a WinXP-System.

a) Where can I get the signing certificate from ?
b) Which tools do I need for signing ? I don`t want any source-code, I want 
an exe-File.
c) How can I sign my xpi ( with this way / sign tool ) ?

Greetings,
Freddie