http://www.househacker.com/ househacker/tags/answering
If you:
have $10, need an answering machine, have a Linux box and have some spare time on your hands, then you may be interested in making your own linux based answering machine. This howto will walk you through the steps to get you up and running with a geek badge called the linux based answering machine.]]> http://www.househacker.com/permanent/A-10-Dollar-Linux-Answering-Machine