How to sign my software to avoid “An unidentified program wants to access your computer” in Vista?

Question

How to get the code sign certificate and how to sign a program with it?

When I'm trying to install my software in Vista, UAC prompt will show "Unidentified program wants to access your computer".

I want to show the publisher's name instead of "unidentified program", during software installation in Vista.

Answer 1

What you need is Code signing.
Some more info is here : Introduction to Code Signing.

Basically, you need to buy a code signing certificate (avoid the make-your-own certificates, as they will still need to be confirmed by the client during installation).

To choose where to buy it, see Which code signing authority should I go with?.
Normally you get full usage instructions when buying the certificate (or else ask here for instructions).