Changing dialer key press tones

[dirt.boy]

Is there any (easy) way for a guy to change the DTMF tones that are heard when the numbers soft keys are pressed in the dialer.

I found the registry area for this but dont see how to change the sound file.

[HKEY_CURRENT_USER\ControlPanel\Sounds\Dtmf1]
"Category"="Feedback"
"Script"="p"
"Sound"=dword:00000001


The other question is whether or not this would hamper the ability to log in to voivemail or other services requiring the tones.

Thanks,
Greg