How to enhance IE8 commands?

[John Montenigro]

For my personal use (not in a product), I'd like to enhance the behavior of these two IE8 commands:
   {context menu}Create Shortcut    (Not robust! Only stores the shortcut to Desktop!)
   File/Save                                   (I want to simultaneously update a logfile)

How can I either:
1. intercept or re-direct the built-in command to run my app, or
2. pass the same info (like a URL) to my app

I looked at IE Accelerators, but I haven't got enough info to be sure I can accomplish this.

Besides an entirely standalone app using hotkeys, is there any other way?

Note: my app will be written in FF, and will accept the passed param and process it to suit my needs.

Thanks!
-John