How do I send ringtone from my cell to another?

[CandyIowa]

I do this so rarely that I can't remember. How do I send a ringtone from my cell phone to another friend's cell phone?
Also. How do I find the ringtone on my cell phone in order to send it?

Thanks,
Candy

 

[Darkstar2007]

Your phones will have to be jailbroken in order to accomplish this task.