you're talking hacking the firmware-- not modding. i'm a certified ethical hacker, and hence the title, i'm kinda stricken by law NOT to do that kind of stuff. unfortunate, i know.
I'd love that, though.
For all you know, I could've done it, but can't tell you how to do it... ;-)
But no, i haven't. Let me know if you find it!
And yes. There's a profession called Certified Ethical Hacking-- I highly recommend it, its a riot! Great fun!