hooking a cell phone.
hi
First i will try to answer your second wonder.There is a facility in almost all cell phones(i have nokia 3310) known as voice recorder,where u record ur voice in against any of the numbers.When u press some button(in mine u have to keep pressed unlock/ok/enter button) and then the cell asks to start the recorded voice. if the voice matches the one which is recorded then the pnone num against that voice gets dialled automatically.
It might be possible to use cell pnone as landline phone,but then you are bypassing all the technology of a cell phone,i mean to say it will work then like a simple keypad.For that u have to somehow make a communication channel between a landline and ur cell handset.MAY be u can get some idea from my reply, otherwise i dont know whether i will be able to do so without a proper hi-tech lab.