Vista - Permanently change a single file's icon

How can I permanently change a single file's icon?

I have organized some backups as ISO files, and would like to have a different icon for each file.

I have created an .ICO for each file.

IconChanger worked great, but only while the program was installed. Once I had all the icons changed and thought I was through and uninstalled the program, all the icons went back to their original disc icon.

Is there a way to permanently change a single file's icon, so if I move it to another machine it will retain the icon?

-Matthew

Technically, yes, a "resource editor" can be used to alter icons embedded in executables. However, once you start haxx0ring an app, most software vendors would see that as a violation of their terms of use, which is why I won't provide further technical detail (I realise you're asking for entirely innocent reasons).

I can't imagine it would be worth your time though. It's just an icon, after all.